The 2nd Official Infocus 4805 Thread. [Text View]

little_blaine

11-30-05, 10:06 AM

I'm a first-time projector owner that jumped on the refurb 4805 deal last week, but I've been following the forum and contemplating a purchase for a long time. I just got the projector yesterday and hooked it up to my laptop for a simple test. Some information first:

1) The unit appears to be like-new. No visible signs of usage. Menu shows 0 hours on the lamp.
2) Firmware revision is 1.1.3
3) The laptop screen resolution is 800x600, connected via the enclosed VGA-to-M1 cable.

I just projected the image to a wall for the first checkout, but even so I was wowed by the clarity and vividness of the picture. However I did notice one problem: The right 1/3 of the screen shows a slight image distortion. The best I can describe it is as rising smoke or rolling clouds, moving from the bottom to the top of the screen. It is faint but noticeable to me, my wife didn't see it at all until I spend a couple of minutes pointing it out to her. Am I experiencing this (from the FAQ):

7.07. I'm noticing a slight pulsing in my picture, what is wrong?

Not to be confused with lamp flicker, for more information on lamp flicker, click here:

There seems to be an issue with the 1.13 and 1.21 firmwares on the 4805. Every now and then while watching on the 4805, there will be some slight strobe-like pulsings in the picture, some people notice it more than others and it seems to vary on anything that you watch, and is most noticeable in darker scenes.

The only solution to get rid of this issue is to revert to the original firmware that you can download here:
1.02 Firmware

InFocus is aware of this problem and is working hard to fix this. There seems to be a fix for this and is going internal testing as we speak Hopefully it will be available in its next firmware update.

If this is something that can be fixed with an upcoming firmware upgrade, I'll hang on the the 4805, otherwise I'll try to send it back for a replacement.

Thanks!

Ja Phule

11-30-05, 10:16 AM

little_blain,
Sounds like you may have either a ground loop problem or a heat problem. It isn't sound like the "pulsing" problem discussed in the FAQ. Try a search for "ground loop" in the forum.

Do you see the image distortion on a blank screen (Press the blank button on the remote)? Have you tried any other sources other than your laptop? Could the distortion be coming from some of the heat out of the front of the 4805?

skyehill

11-30-05, 10:33 AM

Quick question about my 4805. I've started noticing that the screen is "blinking" on bright scenes (or if I just view the white background. It's more of a constant shimmer/flicker visible during only bright scenes. Is this a product of the screen or the projector? It's a year old, has about 320 hours on it. The screen is painted Silverscreen by Behr. Thanks for any help.

edit: just read the faq about flicker. Mine occurs even after an hour of usage. I will try the method of putting the unit on high for awhile to see if that corrects it. I'm hoping it will, as this issue is really annoying on bright movies.

Gushy

11-30-05, 11:21 AM

Blaine

Do you have the pj sitting on a table? If so that distortion you are seeing is caused by the heat of bulb passing in front of the lens. If it looks kind of wavy, like something you'd see on a long straight road on a hot day, then it is the heat.
It is usually really noticible in bright white scenes correct?

The fact that it moves from the bottom to the top is consistent with heat waves as we all know heat rises.

tradewinds

11-30-05, 11:43 AM

any updates on a new firmware for the 4805?

BTW - does anyone know what bug fixes, features/enhancements will be available in a future firmware?

little_blaine

11-30-05, 11:56 AM

Thanks for the replies everyone, it sounds like my problem is from the heat rising in front of the lens (Gushy yes it is on a table and noticeable on bright scenes). I'll experiment some more tonight to confirm. What's the best way to deal with it, given that the PJ has to be on a table for a while until I can get a proper HT setup?

skyehill

11-30-05, 12:00 PM

OK, I bumped up to high power and the flickering appears to have gone away, but now I noticed on the white screen that there appears to be "fumes", if that makes sense, like smoke on the right hand side of the screen on the bright white screen.

Ja Phule

11-30-05, 12:21 PM

any updates on a new firmware for the 4805?

BTW - does anyone know what bug fixes, features/enhancements will be available in a future firmware?

Bob Wiliams (infocus engineer) mentioned they were testing out a firmware that supposedly fixes the "pulsing" issue. No mention of when it will be released. The September firmware update was finished many months in advance before finally being released, so I imagine it could take a few months for another firmware that fixes the pulsing issue to be released. We can always hope.

boukante

11-30-05, 01:12 PM

The clouds you are seeing are caused by the heat from the bulb. There is a density difference between the hot air from the bulb and the cooler air of the room as they mix. This same phenomena can be observed when you pour two liquids together, i.e. fresh water and very salty water.

The name for the lines are often refered to as "Schlieren" lines. Do a search for Schlieren Photography to get more detailed explaination of what is causing the lines. (I'd include a link, but I haven't done my 5 posts yet.

Jeff

Now I have 5 posts! Schileren Photography (http://www.rit.edu/~andpph/text-schlieren.html)

Elfman

11-30-05, 01:44 PM

Just renewing my subscription :)

Carry on.

Alex solomon

11-30-05, 02:05 PM

Just renewing my subscription :)

Carry on.

There ia an easier way to do this. From drop down menu, thread tools, click the option to subscribe.

spyder696969

11-30-05, 02:07 PM

Damn, I wanted to see just how big the original thread was going to get. Guess I'll just have to add up the two different ones now to get the grand total.

Elfman

11-30-05, 02:10 PM

There ia an easier way to do this. From drop down menu, thread tools, click the option to subscribe.

Thanks for the tip, but I was already aware of that.

Just wanted to add to my post count. :D

I mean I am still a 4805 owner so I'll make it on topic I guess.

Umm... 600 hours and still going strong.

Mako PJ

11-30-05, 02:36 PM

Anyone using a Xbox 360 on the 4805 yet? Curious to know what differences you see from the Xbox1 to the Xbox360, and how the 4805 does in displaying the 360. Very pleased by the 4805 but wondering if I need to upgrade soon.

Cataphract

11-30-05, 02:59 PM

Do you guys make any adjustments to the Chroma and Luma Detail settings in the menu? I currently have both of them at 5, the default was 0, I think.

I have done the calibration using DVE and was wondering if those 2 need to be tweaked. Are there any patterns in DVE to calibrate these 2 settings.

I also have the 'Color Space' setting at Auto, is that the recommended setting?

nduda78

11-30-05, 03:03 PM

swift535

11-30-05, 03:32 PM

how's the 4805 do when sitting closer to the image?

i'd like to project at least a 70" image or so, but one of the couches is only a couple feet from the image - maybe 2-3 feet at the close end and 6ft at the far end.

i've heard about some SDE problems from reading around, so how bad is it?

Russ D

11-30-05, 03:41 PM

I received my Refurb 4805 yesterday and it was in great shape and for what I know (1st PJ) working great too. It is a great picture... but I think what I'm most excited about is the Fact that I Did Not buy a Plasma! I was so close and this deal, of which we don't mention, came along... How sweet it is.

There is one Small issue that someone may know about...
I'm attributing it to my VCR or Composite cable. When I play my VCR through the composite in of the 4805 there is a small 1/4" line across the bottom of the picture that is distortion of some kind. I rarely play my VCR and I don't think it's the 4805... But if someone might know what it is...?

Thanks,
RD

Quaid

11-30-05, 03:50 PM

swift535

how's the 4805 do when sitting closer to the image?

i'd like to project at least a 70" image or so, but one of the couches is only a couple feet from the image - maybe 2-3 feet at the close end and 6ft at the far end.

i've heard about some SDE problems from reading around, so how bad is it?

The recommended seating is a distance away equal to 2x the image width. Some people are less sensitive to the SDE and sit at 1.5x with no complaints. For a 70" screen this means starting your seating at around 6' rather than ending there. If those seating distances are set in stone, you should possibly look into 1080p and a second mortgage ;)

The only way for you to make a decision concerning SDE (or RBE for that matter), is to view it for yourself. No amount of forum advice will equal a personal viewing. See if there is an Audio Video store in your area, preferably a higher end store with dedicated light controlled rooms. The 4805 will be the bottom end products of a store appropriate for screening IME. If you find the 4805 at future shop or best buy or costco or the like, it will probably be their higher end and they will have terribly viewing conditions.

chasw98

11-30-05, 03:54 PM

Mako PJ

11-30-05, 04:37 PM

I use my 4805 with my 360. I run it at 720p. I am new to the world of projectors, this is my first , just got it about 4 weeks ago. I know im not at true 720p res, but i can tell a difference over 480i/p for sure....I myself, am trying to find an article about how good the 4805 and 360 really are together....anyways, here are a few real bad pictures of the 4805 running Perfect Dark Zero on the 360.

blah since I am new, first post i cant post urls...i need 5 posts GRRRRR

Well, if you can some pics later that would be great. I am pleased with watching HDTV on my 4805 just wondering if you get that type of picture. If you can tell the difference between 480p and 720p source via Xbox and 360 that is cool for me to hear. If anyone else has input on this issue or can post pics, I would appreciate it. Right now, I am in wait mode over getting a 360 or PS3.

One other question, does anyone know if it will be possible to view Blu-Ray via component, right now I am watching via component thru a component switchbox??

Bobby_K

11-30-05, 04:40 PM

ok, I know this has been beaten to death but I am upgrading from my X1 (1st gen. with Faroudja) to either the SP 4805 or the 5000 and I am having a very difficult time deciding. Im hoping if I provide some info you all can help me decide.

theater room is dedicated, basement 0 ambient light.

screen is 92" 16:9 1.0 gain

PJ distance is approx 14 feet from the screen

min. seating is 12 feet from screen.

I watch mostly DVD's occasionaly play PS2 and will be adding HD satellite soon.

I have researched the 4805 extensivly, but because of recent price drops, I have to at least consider the 5000, right? . Is the 4805's DVD capability so much better than the 5000 that it is a big issue? Will the LCD produce less SD effect at 12 feet than the 4805? Isn't the fan in the 5000 much quieter? I like the idea of having 720p and 1080 native res. with the 5000...

please help me decide!

cbacklund

11-30-05, 04:52 PM

I've never seen anyone recommend a 5000 over a 4805. SDE is supposed to be much more noticeable on the 5000, since the spacing between pixels is much greater.

tivo1

11-30-05, 04:58 PM

Move the candle

I had a candle in front of mine and had this effect going on, from the heat being left off or something (im not engineer)

I'm a first-time projector owner that jumped on the refurb 4805 deal last week, but I've been following the forum and contemplating a purchase for a long time. I just got the projector yesterday and hooked it up to my laptop for a simple test. Some information first:

1) The unit appears to be like-new. No visible signs of usage. Menu shows 0 hours on the lamp.
2) Firmware revision is 1.1.3
3) The laptop screen resolution is 800x600, connected via the enclosed VGA-to-M1 cable.

I just projected the image to a wall for the first checkout, but even so I was wowed by the clarity and vividness of the picture. However I did notice one problem: The right 1/3 of the screen shows a slight image distortion. The best I can describe it is as rising smoke or rolling clouds, moving from the bottom to the top of the screen. It is faint but noticeable to me, my wife didn't see it at all until I spend a couple of minutes pointing it out to her. Am I experiencing this (from the FAQ):

If this is something that can be fixed with an upcoming firmware upgrade, I'll hang on the the 4805, otherwise I'll try to send it back for a replacement.

Thanks!

T0mmy

11-30-05, 05:03 PM

Ric Schultz

11-30-05, 05:27 PM

5000 sucks, get 4805. See my post on the 5000 thread.

I have my 4805 on a table and after it heats up you can see the waves on the screen....so I took a small battery powered fan that I had and put in on the other side of the 4805 and blew the hot air away from the lense...problem solved. My battery died the other day, and I have not charged it, but I don't really find the heat waves that distracting.

Adamesq

11-30-05, 06:09 PM

I'm glad you decided to make a new thread. The old one was just so overwhelming to usnewbies. I think I have mine ordered and on the way, but it's still in "processing" so I'm crossing my fingers. I really want this projector, and I really need it cheap. :D

I don't get it - why did we start a new thread? How was the other one confusing? Now, we have a short thread with little info. How is it less confusing when you just post and look for responses anyway? Does the new thread make it OK to post questions that were answered last week, ispe dixit?

htdude_com

11-30-05, 06:41 PM

The 4805 vs the 5000 is more about DLP vs. LCD.

DLP gives more contrast, better blacks, less SDE than older tech LCD like the 5000.

I haven't seen the 5000 myself, but from what I've read you'll probably be happier with the 4805.

__________________
Home Theater Dude (http://www.htdude.com/) DIY Home Theater
News, reviews and other worthy stuff about all things home theater.

JSpeed

11-30-05, 07:16 PM

I don't get it - why did we start a new thread? How was the other one confusing? Now, we have a short thread with little info. How is it less confusing when you just post and look for responses anyway? Does the new thread make it OK to post questions that were answered last week, ispe dixit?

I agree. There was some good information available in the original thread. It would be nice if people posted relevant questions or information too instead of cluttering good threads with worthless posts to increase their post count.

BTW from everything I have read on the 4805 vs 5000 on this forum, everyone recommends the 4805. It seems to perform better with movies and video content. I am buying one tomorrow.

cavu

11-30-05, 07:20 PM

I like the idea of having 720p and 1080 native res. with the 5000...Huh!? Since when does the 5000 have 1080 native resolution??!!

I don't know why people keep asking this same identical question. The 4805 is head and shoulders above the 5000 in overall PQ.

I won't repeat all the reasons again here. Do some research!! Read a few of the many threads on this comparison instead of blindly asking over and over. Sheesh.

spyder696969

11-30-05, 08:16 PM

Cavu, I agree, but calm down. We don't want ya having a heart attack...unless, of course, you're putting me in your will to get all your AV stuff. ;)
I got my refurb 4805 today and bulb was new, unit looked good out of box, and all manuals, cables, etc. was all there. :) No factory box, who cares? No problems so far, but I'm just in initial stages of playing around with it. I'll post again in a few days after this has seen some heavy usage and been "unprofessionally optimized" by my own humble hands and knowledge.

tradewinds

11-30-05, 08:31 PM

how do you guys just getting your refurbs know that the bulb is new? Thanks.

Alex solomon

11-30-05, 08:51 PM

how do you guys just getting your refurbs know that the bulb is new? Thanks.

I think they are just looking the hours from the about menu. But that could be reset by anybody. Unless there is a secondary counter that is not accessible from the user end it's tough to know the accurate hours on bulbs. I hope all the guys that bought this PJ from S refurb will report their experience.

uzziah

11-30-05, 08:54 PM

could someone suggest a cheap wall mount? it's probably given, but i want the pj as close to the back wall as possible

James W. Johnson

11-30-05, 08:59 PM

I got in on one of the 4805s recently...I had to get rid of a few dust blobs but otherwise its been great except for cable TV.
I have a Comcast HDTV/DVR box and am feeding the 4805 via component video.

I am getting some noise with it.

DVDs via component look great , ive only fed it interlaced. I swapped out cables first and that did nothing, my LCD TV looks great off the same set-up but the 4805 gives me some noise in spots...its pretty distracting.

...ive tried everything...help me out here.

mces

11-30-05, 09:13 PM

Just got my refurb today, and am quite pleased with the unit and the pic quality, but I have a couple of dark almost black specs that show up on my screen while watching a dvd. They appear to be little specs of dust. I cleaned the lens exterior, but that didn't seem to help. I've read about dust blobs but these look different than the pictures I've seen. The dust specs appear to be in focus, as I can see the strands of dust quite clearly. Any ideas?

optikill

11-30-05, 09:25 PM

I got my refurb today as well. I am more than satisfied with it. It seems to be in alright condition. Mine has a scratch (i have no idea - it's on the side of it opposite of the power switch) I do have a couple of dust blobs that are outside of the viewing area (odd). I thought that it was lightspill, but has the characteristics of dust blobs methinks. I'm still loving this thing...

As for the mount - I went to lowes tonight and picked up some galvonized (*sp) tubing and a piece of lucite. I have a couple more items to pick up - but I have almost all of the items I need to build a DIY mount, and so far I only have a few bucks invested.

Would anyone happen to have a printable mounting schematic of the 4805 - to make drilling the lucite easier?

Clams Canino

11-30-05, 09:29 PM

Umm Mr Moderator sir.... before you delete it - can you please move that awsome post with pictorals on cleaning the dust blobs out - over to this thread? I think the poster started a thread of it's own with that post.

For extra credit - can you do the same for the color wheel cleaning guide?

-W

Quaid

11-30-05, 09:35 PM

EDIT:'Adamesq', please take note that you/I/we cannot offer an objective view on why or why not the thread should have been restarted. The new people think it's a great idea, the older people are boggled by it and possibly also frustrated.

*flashback*I remember starting into the old thread at around 500posts or so. It was daunting then, let alone now!*/flashback* Using search is the appropriate means to finding most answers, but lately I've found that I need a search within my search. Finding Bob's numbers for example, the 50ish/28ish stuff, it was damn near impossible. There are numerous references, but I'll be damned if any of them were useful to me. It took me over a half hour of looking through the search results to find the info I wanted. It would have taken so much less effort (albeit distributed effort) to just ask.

The problem with the old thread as I see it is that there was far too much 'noise'. It was useful and also entertaining, but it was a bugger to find facts in. Enter the FAQ. Wonderful piece of work. Glad it's at the top of this thread too! It doesn't have all of the nitty-gritties though, which can be required if you are trying to apply the facts to a specific and non-standard application. Maybe we can write a 4805 ultra-FAQ, with each section including links to the appropriate source material in the old thread(s) for more in-depth reading.

That being said, most questions can be solved with an < 3min thread search. Don't be lazy new people!

Question:
How many 4805 users are using light controlled rooms WITH accoustical and reflective light treatments?

I am working on treating my theater, and it's proving difficult since it is a rented house and major modifications aren't within the scope of my lease.

So far I'm trying to source some rigid fibreglass in my vicinity, and find some good black fabric to tack to the walls and ceiling around the screen.

jdachik

11-30-05, 09:41 PM

Quick first impression on my new (refurb) 4805: I love it! I think, though it's too soon to say, that it may have cured me of RBE - which was the only real problem I had with the X1. Yeehah!

Lamp looked new prior to startup (but I can't really tell), lamp hours were at 0.
No problems/noises.

Throw is shorter (or is it longer) than the X1 (by a greater margin than I expected), I'll have to move it closer to the screen.

Off to watch my first movie - The Muppet Christmas Carol, just released yesterday.

scornful

11-30-05, 09:55 PM

I'm glad you decided to make a new thread. The old one was just so overwhelming to usnewbies. I think I have mine ordered and on the way, but it's still in "processing" so I'm crossing my fingers. I really want this projector, and I really need it cheap. :D

If you actually get that order I'm gonna be pissed... they cancelled mine. Wound up with one from Cr********d. $300 more, but new.

Yes sucks to be me.

Steve

Kysersose

11-30-05, 09:55 PM

I'm leaving the old thread as a sticky for easy access.
Let's move along and continue in this thread. That's the way it's going to be...

scornful

11-30-05, 09:58 PM

Would anyone happen to have a printable mounting schematic of the 4805 - to make drilling the lucite easier?

You read my mind....

Gushy

11-30-05, 10:00 PM

The way you can tell the bulb is new is because the bulb housing is not scorched. Sure they could reset the hour counter but they can't "unscorch" the bulb housing. The bulbs are new; at least mine was.

I'd like to comment on the discussion about the x1 vs 4805. People who think that the 4805 is "not a step up" from the x1 have obviously not seen the the 4805 pixel mapped over dvi. The picture is unfreakin' belieavable. I've had my 4805 for 3 days and I just got my dvi cable tonight. The x1 pq sucked in comparison to the 4805 pixel mapped. Let me say that again. THE X1 PQ SUCKED IN COMPARISON. I too was unsure as to how much better this unit would be then my trusty x1; night and day people. Don't get me wrong the x1 is a great PJ but the 4805, wow.

BTW i'm using theatertek and the nvidia pure video drivers. One word: AWESOME!!!

scornful

11-30-05, 10:11 PM

BTW i'm using theatertek and the nvidia pure video drivers. One word: AWESOME!!!

OK I need to stop drunk callin.... no seriously I'll have the more or less same setup. Ordered my Montego DDT sound card for gaming yesterday too. Wish I could take Friday off from work.

Doc Holiday

11-30-05, 10:19 PM

All I can say is WOW. I just got my SP4805, I upgraded my 4800. I didn't think there would be that big of a difference but there is. The colors pop so much better on the 4805 and the blacks are amazing. Just thought I would share my thoughts. I now know why the old thread got so big and I'm sure this one will get even bigger. Best money I ever spent, or should I say made. I sold my 4800 for $50 more then I spent on the 4805 gotta love eBay around the holidays.

cavu

11-30-05, 10:33 PM

Would anyone happen to have a printable mounting schematic of the 4805 - to make drilling the lucite easier?Look HERE (http://www.infocus.com/service/sp4805/downloads/dimensional-drawing.pdf).

Ja Phule

11-30-05, 11:13 PM

spyder696969

11-30-05, 11:18 PM

What's the best connection(s) to use with a Comcast DVR 6412 box to a receiver to the 4805? I DON'T mean just for the HD channels, but for ALL the channels. What I'd like to use, if possible, is one connection only, straight from the back of my receiver to the PJ, and have the PJ treat all the sources (DVD/Cable/Gaming/Etc.) as one, with the receiver making all the necessary decisions on what source signal to send. I had my old PJ set up this way with s-vid cable only, and while easy for configuration, it's lousy for quality. I know, I know, it wasn't the best way to go, but I needed a quick setup and then got lazy. This time, I want to do it all the right way the first time, even if it takes more effort and/or time. Thanks for any suggestions.

Gushy

11-30-05, 11:20 PM

Ja Phule,

I cleaned the color wheel three times over the 1300 hours I owned the x1; every 400 hours which was probably overkill. I also had flashed it to the 4800 firmware and calibrated it with DVE.

There is just no comparison. DVI is what makes the differnce, no digital to analog conversion and true 1:1. The picture is just so damn clear. I thought that TFE superbit looked good on my x1, it blew me away on the 4805. Can you say reference material!

I need to calibrate the 4805 but can't pull myself away from just watching it.

I've got a question for you Ja Phule. I've read your FAQ and I see that it says we should change the color offsets if your running dvi. But then it says that the 4805 is set for pc color offsets. Since i'm running a htpc I should not have to change the color offsets to the bob williams ones right?

Thanks

tivo1

11-30-05, 11:38 PM

I got my refurb on monday and love it.. noticed the firmware on mine is at 1.13 and now current is 1.2.1 up to you if you upgrade or not, I plan to, but from what i can tell, it doesn't add a whole lot. BUT i like to be current. On that note could someone give me the full name of the executable for the 1.2.1 firmware update, capitalization and all if ya know it?

I knew I was going to get my refurb on Black Friday, so i bought a Oppo Digital dvd player, ok a little over kill, but I'm loveing the picture so far.

Also I purchased an dvi to M1 adapter for ~12 bux shipped third party not from infocus, and it works well as far as i can tell, everything was ready to go when the pj showed up monday.. well cept for the sreen, i went the parkland route, and Like it quite a bit (as some point i might try the magic mud and paint it) but for now my 4x7 or so foot screen is awesome.

Also managed to find a cheap OTA hd receiver (well sorta) less than 50 bux shipped (17 or so for shipping) e bay and all..

But a heads up if your looking for one, I got an old Voom box, aparently if they were activated prior to them going out of service, you can use them for OTA.. which is fine for me, since Im all about the cheap.

Oh yeah.. just curious.. are there any hidden service menus on the sp4805, if so are there any useful settings in there?

Ja Phule

11-30-05, 11:47 PM

cavu

11-30-05, 11:49 PM

What's the best connection(s) to use with a Comcast DVR 6412 box to a receiver to the 4805?I use the Infocus 10m DVI-M1 cable (http://www.provantage.com/buy-7INFB05Q-infocus-accessories-consumables-10m-digital-cable-w-o-usb-sp-m1-shopping.htm) directly from the DCT6412 to the SP4805, bypassing my AV receiver. I use the DCT6412 SPDIF audio connected via my Yamaha AV receiver.

The SP4805 was calibrated but that simply resulted in factory default settings for everything except RGB Gains at 58 and RGB Offsets at 28.5 (Bob Williams numbers which set the 4805 to DVI video levels instead of PC levels). The Aspect Ratio is set to "Native".

The DCT6412 TV Type is 16:9, DVI/YPbPr is set to 1080i and 4:3 overide set to OFF.

I currently manually move the DVI cable from the STB to my Bravo DVD player (which is set to 852x480 pixel-map) till I find a new DVI switching AV receiver.

Hope this helps!

tradewinds

11-30-05, 11:59 PM

can someone explain a bit or point me to what we mean by pixel map? Thanks.

cavu

12-01-05, 12:12 AM

can someone explain a bit or point me to what we mean by pixel map? Thanks.DVI (Digital Video Interface) output offers a digital video signal from DVD to display without any analog conversion. The benefit of a direct digital connection is a picture free from the video noise and artifacts that are the result of D/A conversion. For digital fixed pixel projectors and TVs such as plasma, LCD, DLP, DILA and LCoS, this direct digital signal path allows a capable DVD player to select a "1:1 Pixel Mapping" DVI output resolution that can exactly match that of the display's native resolution. SOUND & VISION magazine's technical editor, David Ranada, called the resultant DVD/DVI picture quality from a Bravo D1 when displayed on a fixed pixel display "Reference-quality."

The result is that the image on the DVD is exactly transfered, pixel for pixel, from the DVD player to an 852x480 resolution display with no alteration of any kind.

There are currently only three manufacturers that provide capable DVD players: V Inc. (Bravo), SnaZio and Momitsu. You can also use an HTPC with a DVI connector and proper software.

You cannot "1:1 pixel map" if using any connection other than DVI (HDMI) and you cannot do it unless the DVD player offers a pixel-map output. 480i, 480p, 720p and 1080i will not cut it!! Neither can you do it with a 576, 720 or 1080 display (well *maybe* 576 with a PAL DVD).

Gushy

12-01-05, 12:13 AM

Thanks Ja Phule. I'm runnin vmr9 so I made the bob williams adjustments. Looks good.

Pixel mapping means that every 1 pixel on the display is being represented by 1 pixel from the source.

SO if you have a 854x480 native display and you are sending it a 854x480 feed then you have 1:1. This is also true for 848x480 as 3 pixels are being cropped from each side. YOu can only map to the 4805 over dvi as this is the only digital input on this device. But trust me, its worth it.

tradewinds

12-01-05, 12:38 AM

cavu/gushy, thanks for the explanation. So, how much better would the DVI actually be as opposed to the component input? i.e. what will happen if your send the source 480i signal via component instead of DVI?

cavu

12-01-05, 12:49 AM

So, how much better would the DVI actually be as opposed to the component input?Understand that simply using DVI (HDMI) does not get you "1:1 pixel mapping". You can also run interlaced and progressive signals across a DVI connection and whether that signal is better than the same type of signal across a component connection will be a function of the quality of the DVD player. But nothing is as accurate as a "1:1 pixel-mapped" DVI connection!!

what will happen if your send the source 480i signal via component instead of DVI?First, understand that no connection via the M1 connector on the the SP4805 uses the Faroudja filter. So, specific to your question, a 480i signal will probably be handled best through the component connection.

b4uxit66

12-01-05, 12:52 AM

cavu

12-01-05, 01:06 AM

No image visible when connecting SP4508 to Comcast dct-6200 using DVI port. Anyone have any ideas what might be the issue here? Don't know. It's obviously not the projector. Post your query to the Official Comcast 6412 w/ iGuide Discussion forum (http://www.avsforum.com/avs-vb/showthread.php?p=6632061).

Gushy

12-01-05, 01:18 AM

Tradewinds,

THe reason that dvi is better is that there is no digital to analog conversion occuring. When you send a signal over component it is first converted from a digital signal to an analog signal as component is analog. THis conversion process can introduce artifacts. This is the main reason dvi is considered superior; you're taking a digital source, keeping it in digital format, and sending it to a digital display device. Thus there is no conversion occuring with dvi.

As Cavu says, merely using dvi does not guarantee 1:1. You have to make sure that your dvd player will output the native resolution of the 4805 which is 854x480. If you are thinking of upgrading your dvd player get one that Cavu listed as this will yield the best PQ for your dollar.

I use my computer, with a 6600gt video card, to send 848x480 to the projector via dvi. While 848x480 is not native the PJ crops the image taking 3 pixels off each side to display a 1:1 pixel mapping.

If you are using a component cable to send 480i to the pj then you will be taking advantage of the faroudja deinterlacer which is probably better then the deinterlacer in your dvd player. I cannot comment on the PQ of faroudja because I have always used a htpc but from what I've heard and read it is excellent.

Clams Canino

12-01-05, 02:56 AM

I also use an old computer relagated to HTPC use - at 848x480 - love it.

-W

krasmuzik

12-01-05, 03:06 AM

So does the new influx of refurbs mean another million views?

BTW our millionth viewer said after the holidays for his tune - time to get hold of me if you want to claim your prize!

I think on this thread I shall provide no meaningful info....and compete with Brian I Am for insiteful social commentary....

BobBart

12-01-05, 05:35 AM

I got my refurb today looks to be in great shape. This is replacing an Epson s1. It looks much, much better than the espon. My living room is small and I am only using a 60" wide screen sitting 8 feet away but it looks fantastic. My epson did throw a bigger picture at the same projector distance, so I have to use full zoom on the infocus, but it looks great to me. I had it hooked 480p over component to a liteon lvd-2001 and was getting these weird pulsing waves. They did'nt go up and down like a ground loop, but staying in the same position and they were throughout the image. I switched the dvd player to 480i and they went away. I'll be using this with my computer but it only has a vga and component output .
What i s the recommended output resolution I should set? I can use 856x480 and 1280x720.

DJ Jesus

12-01-05, 05:58 AM

About how long did it take you folks to get your refurbs?

little_blaine

12-01-05, 06:30 AM

I ordered mine Friday, had it Tuesday.

Gushy

12-01-05, 09:09 AM

Krasmuzik,

I look forward to your social commentary and your ability to correct us if we should give wrong advice. Us n00bs are still working out the kinks. ;)

cavu

12-01-05, 09:24 AM

I think on this thread I shall provide no meaningful infoI think that would be a crime!

DanC-P

12-01-05, 09:25 AM

You can also run interlaced and progressive signals across a DVI connection and whether that signal is better than the same type of signal across a component connection will be a function of the quality of the DVD player. Correct EXCEPT you cannot run a 480i signal into the M1 -- it does not display correctly. I mention this not to be a weenie for details but because it drove me nuts for a while before someone here explained that the M1 can't handle 480i input.

DanC-P

12-01-05, 09:35 AM

I think that would be a crime!
Agreed.

And on a related note... As someone who has spent more time than I care to admit online at AVS in the 4805 thread(s) I'd like to comment on the supposed "noise" that allgedly pollutes our fair community.

If you want specs and interaction limited to strict technical 4805 talk, go read a FAQ or a manual or email tech support. Hanging around here is like hanging around in a virtual PJ shop with all the peripheral banter you would expect between the regulars. That's what makes it special. So if it takes you a few minutes longer to find the specific answer to your query when searching, count to ten and remind yourself that that is the price for participating in a living breathing community.

cavu

12-01-05, 09:38 AM

I mention this not to be a weenie for detailsI think you are in denial!

jdenault

12-01-05, 09:44 AM

BD801s was taking up too much space in the room, and was having a few too many technical issues... SO, I jumped on the SP4805 bandwagon. Looks like it might be a week or so before I get my refurb'd unit, but I imagine it'll be worth the wait.

cavu

12-01-05, 09:46 AM

Hanging around here is like hanging around in a virtual PJ shop with all the peripheral banter you would expect between the regulars. That's what makes it special. On a serious note ... seriously ;) ... this is very true.

I am actually shut in, recovering from a stroke. Providing what support I can here is actually therapy for me and provides me with a virtual social life in the process. (I know, I know. How very, very sad.)

jdachik

12-01-05, 10:47 AM

Well, after watching one movie, I can say I jumped the gun a bit on saying the 4805 cured me of rainbows. I can still see them, but they are very much reduced. Easily tolerable, and far better than the X1. Beyond that, the 4805 puts out a gorgeous image, that much is clear. It is quieter than the X1 (IMHO), although the noise it puts out has a different quality that I find somewhat more noticeable than the X1. Perhaps in time I will learn to tune it out, like I had with the X1. SDE was never really a problem for me with the X1 and the case is the same with the 4805. However, I think I'll be tempted to go bigger with the 4805, which may introduce that problem. Right now I'm running a 90" image, we'll see if I can resist the temptation to go bigger. All in all, I'm extremely pleased. And after selling the X1, it cost me about $50 to upgrade. Can't beat that (except for those of you that made money on the deal :rolleyes: ).

cavu: My best wishes for a speedy recovery.

James W. Johnson

12-01-05, 10:59 AM

I have a regular DVI-D cable ...I found some cheap adapters on Ebay ...are these as good as Infocus' more expensive adapter?

Hughman

12-01-05, 11:00 AM

If you want specs and interaction limited to strict technical 4805 talk, go read a FAQ or a manual or email tech support. Hanging around here is like hanging around in a virtual PJ shop with all the peripheral banter you would expect between the regulars. That's what makes it special. So if it takes you a few minutes longer to find the specific answer to your query when searching, count to ten and remind yourself that that is the price for participating in a living breathing community.

Everyone's here for different reasons and I take almost the complete opposite approach to yours. I feel this is AVScience for reason and would prefer to stick to the technical or science end of things. It's the bantering which I'd rather avoid (but often can't resist), as my primary reason for checking in is not for friendship but I do try my best to be friendly.

But really, regarding the 4805 there's not too much more that can be said that not already in the orginal thread a thousand times over. Perhaps there should be a restriction on new members not being able to post until they've tallied a set amount of time in the search area of the site. Now some more mindless banter, I'm not sure why but relegating the original thread to the archives kind of reminds me of "1984" for some reason.

DanC-P

12-01-05, 11:08 AM

Everyone's here for different reasons and I take almost the complete opposite approach to yours. I feel this is AVScience for reason and would prefer to stick to the technical or science end of things. Fair enough, but as the son of a sceintist I can assure you that scientists joke around too. :)

BretLuke82

12-01-05, 11:21 AM

Hughman

12-01-05, 11:21 AM

.. as the son of a sceintist I can assure you that scientists joke around too. :)

I agree but often it's so hard to tell and often get's mistaken for scientific fact. :D

James W. Johnson

12-01-05, 11:27 AM

cavu

12-01-05, 11:44 AM

I found some cheap adapters on Ebay ...are these as good as Infocus' more expensive adapter?It may not be "as good" but they will likely work. Before you dismiss them, froogle Infocus' part numbers - you will find them elsewhere cheaper than Infocus themselves.

Devedander

12-01-05, 11:57 AM

Would anyone happen to have a printable mounting schematic of the 4805 - to make drilling the lucite easier?

I just did what I usually do for drilling stuff...

Put paper on back of PJ

Poke holes or mark off where holes are

Tape paper to thing I want to drill

Drill through paper

Remove paper

I did this on a steel mounting bracket that was originally made to hold up a tv, it worked a charm.

therealgeno

12-01-05, 12:06 PM

Hanging around here is like hanging around in a virtual PJ shop with all the peripheral banter you would expect between the regulars. That's what makes it special.

Couldn't agree more. This thread is really not like any others for that reason - and a huge reason why I still subscribe - and rarely venture out in the other threads - the others are just too boring!!

Devedander

12-01-05, 12:06 PM

No image visible when connecting SP4508 to Comcast dct-6200 using DVI port.
Comcast confirms that DVI port on the 6200 is active, they came out to my house and tried 3 different STB's, they all had the same issue. I tried a different DVI source( my laptop connected to it's docking station) using the DVI port and this working fine, I also tried another DVI source (LG lst-3510A HD Tuner/DVD) and this also works when using the DVI port. This confirms that my 25 ft DVI cable and M1 adapter is good. Anyone have any ideas what might be the issue here?
PJ is running the latest firmware.

In the old 4805 thread there was someone mentioning that the DVI in on the 4805 didn't handshake properly with some devices, namely ones that didn't force output. So it worked with the test equipment at IF but apparenlty not with the users computer. Maybe it's similar...

Cataphract

12-01-05, 12:32 PM

Question:

I picked up a refurb 4805 from a "deal of the day" type website 45 days ago. Everything was going great for awhile. Now it seems as though the projector has lost a good bit of it's brightness.

The bulb counter was at 0 when I received it (could've been reset obviously), now it's around 90 hours.

What are the chances that they put an older bulb in mine and it's reaching it reached half-life ? Since I'm within the first 90 days will this be covered under warranty (I got the 12 monther as well) ? Should I contact InFocus, who should I talk to ?

Looks like we bought around the same time from the same place. I have about 75 hrs on it (35 days) and for now things look ok to me, but if you have lost some brightness in just 45 days, I would be interested in knowing how Infocus handles this.

Please keep us posted on how they respond.

mr_jbloggs

12-01-05, 12:34 PM

My "new" Refurbished 4805 got delivered last night. So as soon as I get some time this weekend i will start checking it out and you can be sure I will be posting my comments & questions here to all you very intelligent people on this thread.

Rahl

12-01-05, 12:48 PM

Ja Phule

12-01-05, 12:53 PM

Hello everyone.

I'm going in on the 4805 bandwagon on Monday.

I do have a question though to ask of all you experts.

My current situation prevents me from hanging the projector from the ceiling since it is about 16 feet high and has an angle.

I don't want to mount the projector on the coffee table because I have a 2 year old and a 6 month old.

I plan on building a shelf that sits behind the couch approx. 4 feet high.

Should I mount the projector upside down or right side up?

My seatings is 13 feet back, projector will be 14ft back and my screen will be 100in.

Thanks everyone.

How high (or low) do you want the bottom of your screen to be from the floor? A 4ft shelf with the projector right side up will project an image with the bottom of the picture at around 5ft high.

I'd recommend a shelf mount closer to 8ft with the 4805 upside down, which would put the bottom of the image around 3 feet from the floor.

Stiltz

12-01-05, 01:46 PM

Hi Everyone-

I finally picked up the M1>HDMI adapter (hooked up to my HTPC with a Gigabyte fanless 6600 via DVI out with an HDMI end) and my 4805 cannot seem to find the image when I switch to "computer." Basically the bottom left hand corner of the screen keeps flickering back and forth as it trys to find the computer image.

Can anyone help with this issue?
Is it a setting on my 6600 nvidia software? (I've tried clone, split, etc)
Is it the M1>HDMI adapter?

Thanks for any help and advice! (I've been waiting a long time for 1:1 pixel mapping and can't wait to figure it out)

Yahmoncool

12-01-05, 02:11 PM

I have recently developed a minor problem with my 4805. Occassionally (once or twice per movie) the fan will become noticeably louder than it usually is. When I flip the lamp to high power for 10 or 15 seconds then and back to low lamp it always fixes it.

Any theories?

I haven't cleaned the filter yet and I'm at about 250 hours (will do it very soon), could this be a problem?

Additionally - my dumba$$ roommate left MY projector on for 12 hours straight (by accident) while I was away for the weekend. Could this have caused any damage (related or unrelated to this particular problem I'm addressing)?

Thanks.

DanC-P

12-01-05, 02:17 PM

I haven't cleaned the filter yet and I'm at about 250 hours (will do it very soon), could this be a problem?
This could definitely be the issue -- take the plunge and clean your filters -- it's easy. I doubt your dumba$$ roomate has anything to do with this. :)

spyder696969

12-01-05, 02:18 PM

Additionally - my dumba$$ roommate left MY projector on for 12 hours straight (by accident) while I was away for the weekend. Could this have caused any damage (related or unrelated to this particular problem I'm addressing)?

Thanks.

Man, I hope not. I use my PJ that long almost every day.

mattbrown

12-01-05, 02:23 PM

Weird thing. I have a Samsung 451 HDTV tuner running into the 4805 via component. I keep its output on 720p, I think the 4805 does a better job with it than 1080i. Anyhow, I was attaching an FM antenna to my Sony receiver when...I don't know what happened, I heard my subwoofer reset like the power had been tripped, and I look at my screen and the 4805 picture is totally green.

Did an auto picture. Same thing. Powered the 4805 off and on. Still green. Checked all my channels; they were all green. Reset the Sammy and check the component cables. Green. Ran an S-Video cable from the Samsung to my CRT and got a perfect picture. So...I switched the signal from 720 to 1080 and problem gone! Untill I go back to 720 then it is green. And I do mean green. Worse than when you are in the Matrix.

Matt

Ja Phule

12-01-05, 02:47 PM

Ja Phule

12-01-05, 02:48 PM

Yahmoncool

12-01-05, 02:59 PM

Will do - I'll post back.

Rahl

12-01-05, 03:26 PM

How high (or low) do you want the bottom of your screen to be from the floor? A 4ft shelf with the projector right side up will project an image with the bottom of the picture at around 5ft high.

I'd recommend a shelf mount closer to 8ft with the 4805 upside down, which would put the bottom of the image around 3 feet from the floor.

Hmm... maybe I should make the shelf 8 feet tall. The wife will probably go berserck. :D

How high are most screens from the floor? I don't want to have to look straight up to see the picture. :) 4-5 feet sounds kind of high.

Ja Phule

12-01-05, 03:40 PM

3ft sounds reasonable. Do you have a 5.1/7.1 speaker set up? Most people make sure there's room for their center speaker.

It's recommended to have your eyes around the bottom 1/3 to 1/2 of the screen.

Rahl

12-01-05, 03:44 PM

Yeah, I have 5.1 and was planning on having the center channel under the screen with a slight upwards pitch.

When sitting on my couch my head is about 3-3 1/2 feet high. So with the screen bottom at 3 feet that should work.

My couch is in the middle of the room. The room's dimensions are 10x25. That's why I was saying my wife was going to have a fit because an 8 foot shelf in the middle of the room behind the couch is going to be crazy.

cavu

12-01-05, 03:49 PM

How high are most screens from the floor?The quick answer to your question is about 30" off the floor.

The top (bottom) of the screen is generally about 12.5" below (above) the centre-line of the lens when the projector is ceiling (table) mounted. This distance is called the "offset".

The offset is completely dependent on how big your image is: it is 27.8% of your screen height.

Use this screen calculator (http://www.infocus.com/service/sp4805/downloads/ScreenPlay%204805%20calculator%20with%20screen%20brightness. xls) to work it out exactly.

Finally, read THIS THREAD (http://www.avsforum.com/avs-vb/showthread.php?p=6582853&&#post6582853). Another fellow had EXACTLY the same question.

Here is an image from that thread:

http://www.picshelf.com/images/projector_pics/UpsideDown_mount.jpg

BobBart

12-01-05, 03:53 PM

Is there supposed to be a small black border on the left and right side of the image? I have it set on 16:9 and the dvd player on 16:9 using 480i or 480p I have about 1" border around the image.

tivo1

12-01-05, 03:57 PM

Since no one helped me out... i did a bit of URL playing and found it.....

http://www.infocus.com//service/software/downloads/sp4805v121.exe

Direct download for the latest update.

tivo1

12-01-05, 03:59 PM

Has anyone done a fan swap on the pj? Seems to me, one would be able to find a quieter fan?

Anyone happen to have a service manual for the PJ? Or know where to get one?

cavu

12-01-05, 04:07 PM

Is there supposed to be a small black border on the left and right side of the image?The image should be the same size as the white (or blue) "blank screen" you set when you press the "BLANK" button on the remote.

Ja Phule

12-01-05, 04:17 PM

Has anyone done a fan swap on the pj? Seems to me, one would be able to find a quieter fan?

Anyone happen to have a service manual for the PJ? Or know where to get one?

People have mentioned the possibility but I don't believe there has been any success, try searching in the old 4805 thread (good luck with that). You might be better off building a hushbox.

BobBart

12-01-05, 04:22 PM

Geostyce

12-01-05, 04:26 PM

jdachik,

You might want to try an ND2 filter, it will cut your light output and people have reported that it reduces RBE.

Peace,

Geo

cavu

12-01-05, 04:32 PM

It is the same size as the blue screen, but even the blue screen has the border. It's like the image doesn't fill the whole projected area.I don't understand what makes you think there is a "border". The "blue screen" is the "projected area"! If the "blue screen" doesn't fill the display area on the wall, adjust the zoom lens so that it does!
Even if I hit the overscan button it doesn't fill in those borders.The overscan button does not change the overall size of the display, it just crops the image and enlarges it to fill.

BobBart

12-01-05, 04:37 PM

I understand the blue screen is the projected area, what I am saying is to the left and right of the blue area there is a 1" black area that is being projected from the projector and not filled with the blue screen. I can use the picture shift and shift the picture to the left so there is no black area but then the right black area is larger.

Ja Phule

12-01-05, 04:42 PM

There is a very small black border around the blank projected image, I'd suggest maximizing your screen area and having this light spill being covered by your screen's border.

cavu

12-01-05, 04:42 PM

to the left and right of the blue area there is a 1" black area that is being projected from the projector and not filled with the blue screen. What is the EXACT measurement size of your display screen?

What is the EXACT measurement size of your blue screen?

The "blue screen" is your image area. If it doesn't fill your display area, adjust the zoom till it does.

If you are saying that there are black borders on the left/right and not on the top/bottom, your screen is not 16:9 ratio.

BobBart

12-01-05, 04:43 PM

Thanks Ja Phule, that is what I wanted to know.

Redbird

12-01-05, 05:06 PM

I've been on 4805 forums since even before day 1 and have read every post (well nearly every post). I have a question that I don't believe I've ever seen asked. Not a problem, just a curiosity.

I've had my 4805 for a year and a half. I mainly use it for watching movies. DVD player through component input via an A/V Switch. I recently picked up an OTA HD receiver and hooked it up, also component and also though the same A/V Switch.

When switching the aspect ratio while watching a DVD, the screen freezes, turns blue, then changes aspect. Takes 2 to 3 seconds. When doing the same while watching the feed from the HDTV tuner, regardless of the resolution, aspect switching is immediate.

Both component inputs coming from through the same switch at the same resolution but the projector reacts differently to each. Any reason for this?

-Redbird

jdachik

12-01-05, 05:12 PM

jdachik,

You might want to try an ND2 filter, it will cut your light output and people have reported that it reduces RBE.

Peace,

Geo

Thanks, I have one. Heard that trick while trying to make RBE go away on the X1. It helps a little I think. And I do have it on the 4805.

Ja Phule

12-01-05, 05:17 PM

PhilM

12-01-05, 05:42 PM

Rahl,
Here's how my setup is, and using keystone correction is not a problem, I have never noticed it. My 4805 (X1 replacement) is on a shelf inside a 'handy' 2' vertical cabinet stacked 2 high without front and back (Walmart ). The shelf slants down in the front, putting the projector front 40" off the floor. My 108" HP screen is 35" off the floor 17' away. The cabinet sits behind my back sofa, and as long as the person in the beam stays low or to the side, there's no problem. This was going to be a temporary setup until I did the ceiling mount thing, but it's worked out so well I'm sticking with it. There's nothing better than being in the HP screen "cone" !

Rahl

12-01-05, 05:44 PM

Thanks Cavu, the information and link you provided helped a lot. Out-standing!

Hughman

12-01-05, 05:45 PM

It is the same size as the blue screen, but even the blue screen has the border. It's like the image doesn't fill the whole projected area. It's almost like there is underscan on it. I wasn't sure if this was normal. My previous epson s1 had overscan so there was no border at all. Even if I hit the overscan button it doesn't fill in those borders.

This would appear to be normal, I noticed the same slight black border of pixels. I decided to count the remaining pixels and determined that all the PJ's 854 pixels are being displayed so it's not an underscan issue but appears to be a border of pixels on the panel not in use. These will never be part of the signal so zoom the image out.

Rahl

12-01-05, 05:50 PM

Brian I Am

12-01-05, 05:51 PM

I think on this thread I shall provide no meaningful info....and compete with Brian I Am for insiteful social commentary....

This is going to work out PERFECT Kras. I'v decided to stop adding any insiteful social commentary and instead just provide meaningless and at times misleading information.

So we want science huh...ok someone. Solve this issue for me PLEASE!

After a fresh instal of WMCE, the latest offical MCE Nvidia drivers, (77.79) and the latest version of TT all through a 6800 card into the 4805...here are my issues.

Entering 854x480 @ 60hz into the Nvidia custom timings, the Nvidia accepts them and then changes its displayed timings to 856x480. I can then enter 72hz, which the Nvidia timings wont display...however.....

The 4805 displays 856x480 @ 71hz. Using DVEs resolution patterns, the patterns look PERFECT, sharper, better than ever as reported long ago...however.....

I have several pixels of random crap being displayed down the right hand side of the screen when ever TT is playing. These are not there when displaying just the desktop. I can eliminate them with overscan....however...

When overscaned, the resolution patterns change and no longer appear as correct.

No amount of aspect ratio changing or blanking in TT will solve it.

I tried going into the component settings of the 4805 and adjusting the tracking, H position, but with no effect. (It wont retain the settings anyway now for some reason)

I can't help thinking it is in the HFP and HBP in the Nvidia timings...but as usual, I cant get it to retain any of those changes...

Any thoughts or help would be GREATLY appreciated. :confused:

scooterboy

12-01-05, 05:59 PM

Hmm... maybe I should make the shelf 8 feet tall. The wife will probably go berserck. :D
I have the same type of ceiling. Check out this thread (http://www.avsforum.com/avs-vb/showthread.php?p=4925788&&#post4925788) to see pics of my camouflage solution.

NXPlasmid

12-01-05, 06:01 PM

Fan will get louder if the projector is getting too hot. Cleaning the filter if its dirty will give it better airflow and better cooling.

Well, I just bought a new (not refurb) 4805 and have it ceiling mounted on an 8x10 piece of lucite, using 3/4" standoffs and I also get the increased fan noise periodically throughout a movie. It can't be dust as the projector did this within the first movie I watched. It's mounted upside down, in low power mode. Any thoughts? perhaps I should use longer standoffs to give more space between the projector and the lucite? Also, does anyone have an airflow diagram for the 4805?

My X1 to 4805 comparison (inital thoughts):
Setup (the same for both projectors): Ceiling mount 11 feet from 60" wide (not diagonal) HCCV screen. Black curtains behind screen and dark red ones on one side. white ceiling so not totally light controlled. Seating directly below the projector (11ft)
DVD Player: Zenith DVB318 component out @ 1080i
Brightness and contrast adjusted with DVE

X1
The combination of the X1 with the 318 @1080i gave a pretty damn nice picture on the Dalite HCCV screen material. The Screen door effect was only noticable on some DVDs and mostly in distant scenes that were brightly lit. Also, the HCCV screen really reduced the RBE to almost none.

4805
The picture is a little sharper and a lot brighter (I might consider an ND2 filter) I would say it's not so much better that I would upgrade for the better picture. I would imagine for larger screen sizes the brightness would be quite a bonus. For my setup it may be too bright, but there were certain dark scenes, such as the initial fight scene in crouching tiger hidden dragon between the two women where the X1 could have used a bit more light and the 4805 is much better.

The color and the contrast are in a whole different league. The definition of the blacks and the vividness of the colors are just fantastic compared to the X1. I think that's where the rubber hits the road between the two projectors. There's simply no comparison. The X1 has a great picture but the blacks and colors are really muted compared to the 4805. Also, the 4805 is a little (not much) quieter than the X1 when the fan is on the low speed setting, but when it kicks up to high speed it is WAY louder. I am hoping it is due to my set up and if I improve the airflow the fan will stay at the low speed.

Mark

rudedoggy

12-01-05, 06:13 PM

What is the best connection I can use from my new Sony 995 400 DVD changer to the 4805? The Dvd changer is upconverting and has HDMI support, but will that be better than using component? With component, doesn't the 4805 use its internal conversion to its native res (854X whatever)?

I am too new to understand about most of the technical jargon regarding conversion chips and such, so a straightforward/layman type answer would be appreciated?

By the way, haven't fired up the refurb 4805 I got in the mail yesterday, but heard something rattling around inside it and out comes a little black washer....That can't be good...

Thanks guys.

Rudedoggy

www.eccentricsolutions.com

Ja Phule

12-01-05, 06:22 PM

Well, I just bought a new (not refurb) 4805 and have it ceiling mounted on an 8x10 piece of lucite, using 3/4" standoffs and I also get the increased fan noise periodically throughout a movie. It can't be dust as the projector did this within the first movie I watched. It's mounted upside down, in low power mode. Any thoughts? perhaps I should use longer standoffs to give more space between the projector and the lucite? Also, does anyone have an airflow diagram for the 4805?

How much space is there between the back of the projector and the wall, if any? Is there anything that may be limiting airflow to the 4805. I believe it takes air from the back and blows out the front. Is it getting sufficient cool air to suck in?

Ja Phule

12-01-05, 06:25 PM

What is the best connection I can use from my new Sony 995 400 DVD changer to the 4805? The Dvd changer is upconverting and has HDMI support, but will that be better than using component? With component, doesn't the 4805 use its internal conversion to its native res (854X whatever)?

You could try A/B both types of connections to see which looks better to your eyes. You must remember that you will need to recalibrate the projector for each connection using AVIA, DVE, or THX. Using HDMI means you'll let your sony's deinterlacer do the work, while 480i component will let the 4805's Faroudja do the work. The question is which is better?

The 4805 uses Academy Award winning Faroudja DCDi deinterlacing when feeding it 480i component and it will help give a great picture.

PhilM

12-01-05, 06:38 PM

Rahl,
The bottom of the front of the projector is 40" off the floor, the back is 41". It is right-side-up. Keystone is set is set to 37. The projected image comes out of the upper part of the lens, not the center, but it doesn't seem to be distorted.

Roy

12-01-05, 06:48 PM

Question: why do you need a ND filter if you can adjust brightness? Thanks.

speed32219

12-01-05, 06:49 PM

Help! I am so confused over the different types of connectors for the 4805 trying to interface to different devices. I just ordered a M1 to DVI female interface. I am trying to connect a Dish 811 that has a DVI-D female. I also wanted to try out the Toshiba 850 DVD with hdmi out (male). Just do not know what to order, it gets confusing with the different interfaces as well as the genders of the cables. Looks like what ever gender the manufactorer wants to use.

I ordered the InFocus Proxima Projector M1 Male to DVI-D Female Video Adapter from trianglecables.

Ja Phule

12-01-05, 07:01 PM

Question: why do you need a ND filter if you can adjust brightness? Thanks.

The brightness picture setting on displays doesn't control the actual brightness of the display, it controls the "Black Level." The contrast picture setting controls the white level. The ND2 filter will cut down on the actual lamp brightness.

TakeFlight

12-01-05, 07:03 PM

Question: why do you need a ND filter if you can adjust brightness? Thanks.

Because even though it's called "brightness" you are really adjusting the black level of the display.

Ja Phule

12-01-05, 07:03 PM

NXPlasmid

12-01-05, 07:30 PM

How much space is there between the back of the projector and the wall, if any? Is there anything that may be limiting airflow to the 4805. I believe it takes air from the back and blows out the front. Is it getting sufficient cool air to suck in?

Actually, I should post a picture since my DIY mount is pretty easy to make and not expensive. It uses a speaker wall mount braket. Anyway, it's mounted in an archway wall between two rooms so it has nothing in front or behind it.
Mark

Hughman

12-01-05, 07:31 PM

Question: why do you need a ND filter if you can adjust brightness? Thanks.

I'm quoting my response to the same question posed a month ago.

"I think what you're referring to is reducing the contrast to lower the white level brightness which you can do. This is not the preferred method as the absolute black level remains unchanged therefore the contrast ratio takes a dive. Adding a filter lowers both absolute white and absolute black levels which maintains contrast ratio."

rak306

12-01-05, 07:50 PM

With over 600 pages on this projector, why not make a separate forum for the 4805?

I think we would all be better served.

mprover

12-01-05, 07:59 PM

I agree about the subforum. This projector obviously has more interest and commentary. The long , linear nature of this thread makes it hard, if not imposible to find the answer to questions.

Kysersose

12-01-05, 08:00 PM

Why not make a new forum for the 4805?
With over 600 pages on this projector, why not make a separate forum for the 4805?

I think we would all be better served.

Please. The same thing was said about the LT150 and the X1. I'm sure the same thing will be said about the next cheap/popular digital projector.

It's not going to happen so let's just make the best of this situation. :)

uzziah

12-01-05, 08:01 PM

dty

12-01-05, 08:15 PM

I checked my bulb on my cc refurb before turning it on and it was new. I also have the 1' black border around the image.

just lettin ya know.

rak306

12-01-05, 08:18 PM

Your post is a little confusing. With your comment that there's 600 pages on this projector by implication you suggest there already is a separate forum and thids would be correct. You've also posted your question on the second of such dedicated 4805 threads and the only one which is open for posting.

This thread is dedicated to the 4805 in case you were wondering.

My point is simple. No one, is going to be able to go through 600 pages looking to see if someone has alreay talked about the subject he/she is interested in. I have a 4805, and I would much rather there was a subforum listed under the <$3500 projectors for the 4805. (similar to how there is a subwoffer forum under the audio forum, of course other popular projector owners would likely demand equal time). It would make it much easier to follow what are a multitude of separate threads all merged together, that are all about the 4805 in some way.

Just my opioion.

speed32219

12-01-05, 08:26 PM

For your dish box, you will need a male to male dvi-d cable to go to your m1-dvi-female. For your dvd player, you will need either a dvi-d-female to hdmi adapter or you can get a m1 to hdmi adapter.

Thank you, that information helped a lot. I ordered the cables but after looking at the cables I made a mistake in my previous post, the DVD is a female HDMI (I thought a male since I could see the prong type connector, but the male slips over the female which is the opposite of an electrical cord but as I stated prior its all new to me. :) ) Thanks once again.

But I have another question. I have just recently purchased a Yammy HTR-5890 (Component out only) that I just put in over the weekend and my neighbor wants to get one. So I have an opportunity to sell it to him and replace it with the Yammy HTR-5990 (HDMI out ). Here are a few specs. before I ask my question.

2 In/1 Out HDMI Interface for High Quality Digital Audio and Video Data Handling
Fully Analog Video Up Conversion to HDMI and Component Video Output with TBC
De-Interlacing (480i to 480p)
Wide-Range Video Bandwidth (100MHz -3 dB)

These full featured all-in-one boxes are new to me. I am using Adcom (3) GFA 555's, Gsa700 pre, GDD1 decoder and energy take 5.2 with powered sub. (that is my HT components, have a separate audio system for audio only)

Anyway back to the question. Since the 4805 does the up converting within the component input (Only ?), I was thinking of using the HDMI connection out from the Yammy and connecting everything using one M1 male to HDMI out on the 5990 and letting the receiver do all the up converting. (then I could connect 2 HDMI and three component inputs to the Yammy and let it handle all the Video Up Conversion to HDMI) THen I could calibrate (which I need to get the DVE disk) the 4805 once and just sit back and enjoy. Does it sound like I am on the right track? I am a newbie for sure with all this new tech stuff, but especially with the connectivity issues.

Thanks

Kysersose

12-01-05, 08:32 PM

My point is simple. No one, is going to be able to go through 600 pages looking to see if someone has alreay talked about the subject he/she is interested in.
It's not like you have to go through it page by page? Try the "Search this Thread" option at the top of the page. It actually works but most people don't use it.

of course other popular projector owners would likely demand equal time
BINGO!

Hughman

12-01-05, 08:41 PM

My point is simple. No one, is going to be able to go through 600 pages looking to see if someone has alreay talked about the subject he/she is interested in. I have a 4805, and I would much rather there was a subforum listed under the <$3500 projectors for the 4805. (similar to how there is a subwoffer forum under the audio forum, of course other popular projector owners would likely demand equal time). It would make it much easier to follow what are a multitude of separate threads all merged together, that are all about the 4805 in some way.

Just my opioion.

I deleted my post just before I noticed you quoted it as I misread "forum" as being "thread". I agree it's difficult to go through 600 pages looking for info but there is the search tool which if used can be a fine substitue. It's obvious many are either too impatient to use this funtion or don't know of it's existence and there lies the problem. A dedicated forum would still lead to the same questions over and over again as those too impatient to spend a few minutes utilizing the search function probably won't make an effort to go back one page for research let alone 10 or 20 to find the answer and still post redundantly. I would predict that if several 4805 sub-forums existed it would be a only a couple months before the distinctions of each were completely lost anyway and would require very high maintenance to keep organized.

rak306

12-01-05, 08:52 PM

It's not like you have to go through it page by page? Try the "Search this Thread" option at the top of the page. It actually works but most people don't use it.

Yea, and we could have just one forum for video projectors, and just search it for what you want. I do use the search, and it does work. But its hard to browse and skip content you are not interested in.

When you are reading a merge of a threads, and the next comment to a post is 30 posts later, its hard to follow.

If you've thought about it and it's not going to happen, so be it. I won't comment on the topic any more.

Thanks for the reply.

Kysersose

12-01-05, 09:01 PM

If you've thought about it and it's not going to happen, so be it. I won't comment on the topic any more. Let's just say that it comes up from time to time. :)

Thanks for the reply.No problem.

Kysersose

12-01-05, 09:34 PM

Don't make me close this thread....

milesfides

12-01-05, 09:38 PM

uzziah

12-01-05, 09:44 PM

just turned on my new (refurb) 4805. no image from the laptop, even when i hit the obvious "crt/lcd" button. using included m1-vga/usb cable, but haven't installed any software or anything. ideas?

btw: holy crap, this is really loud. i hope it gets quieter.....please tell me it does...

omfg. i got it working. i'm blown away. i've got it sitting on a cardboard box, running a dvd on my crappy laptop on an ugly bumpy white (dirty) wall, and it just looks great. can't wait for proper setup, 480i input, mmaxxx painted wall. and 92" image. i even ran some gamplay footage of pd0 on windows media player, and i would have been stoked just playing it like that. getting the real 720p input from the 360 rather than the crummy low-rez image i was watching on my laptop. plan on using vga cable. man i'm looking forward to this investment and 5.1 sound!!

speed32219

12-01-05, 09:54 PM

HD Cable Box interference:

I'm getting a type of video interference in my infocus 4805 projector. Wide, light purple bands slowly rise from bottom to top, and it cycles over and over again. It's not too distracting, but is there some way to get rid of it?

I have component cable connecting the Cablevision high definition box SA4200 to the projector.

Any tips?

Try an S-video and see if it is still there. I'm a newbie, but it sounds like maybe a ground problem, bad cable and or cable box setup. MHO

Also, I hope that is not what they call rainbow effect. Never seen it but that's why I bought the 4X wheel 4805, saw enough threads about a rainbow effect with 2X.

milesfides

12-01-05, 10:03 PM

Try an S-video and see if it is still there. I'm a newbie, but it sounds like maybe a ground problem, bad cable and or cable box setup. MHO

Also, I hope that is not what they call rainbow effect. Never seen it but that's why I bought the 4X wheel 4805, saw enough threads about a rainbow effect with 2X.

Definitely not RE. This is like the old 60's rabbit-ears television banding, except the bands are a light purple (or green, for some reason now, i can't remember if it were purple or green bands). You can tell by the discoloration of people's faces.

These bands take up about 1/6th of the screen space, about 2 or 3 at a time, and it starts from the bottom of the screen, slowly travelling to the top, ad infinitum.

Russ D

12-01-05, 10:41 PM

I too have a black border. If I remember... I think a couple pages back someone said it was normal . When I saw your question and wanted to answer... it took me 20 minutes or so to get through all the posts... I also got side tracked, started reading some stuff on wall mounts and almost forgot why I was reading this thread. It's tough getting old. I use to wonder where time goes... Now I Know! It'll be right here catching up on the 4805 thread.

;)
RD

Is there supposed to be a small black border on the left and right side of the image? I have it set on 16:9 and the dvd player on 16:9 using 480i or 480p I have about 1" border around the image.

spyder696969

12-01-05, 10:55 PM

Don't make me close this thread....

WHY? I haven't seen anything that would merit such an action, and I have been reading this and the last (now closed, but I don't know why) 4805 threads religiously for the past week. I'm certainly not complaining, so please do not construe this inquiry as such. I'm simply desperate to understand why the anxious anticipation to close out this and all other 4805 threads while I see clear violations of price posting policies, banter, trolling, and other violations on so many other threads of far less discussed and beloved products. Please help me to understand.

uzziah

12-01-05, 11:21 PM

WHY? I haven't seen anything that would merit such an action, and I have been reading this and the last (now closed, but I don't know why) 4805 threads religiously for the past week. I'm certainly not complaining, so please do not construe this inquiry as such. I'm simply desperate to understand why the anxious anticipation to close out this and all other 4805 threads while I see clear violations of price posting policies, banter, trolling, and other violations on so many other threads of far less discussed and beloved products. Please help me to understand.

<personal opinion/exercising free speach> = avsforum mods have a mega POWER TRIP going on.

b4uxit66

12-01-05, 11:37 PM

Devedander,

Thank you for the info, I will do a search. I did more testing today and I found that only when the HD tuner of my LG lst-3510A is active (HDTV-OTA) do I get an image through the 4805 with the DVI port and I can toggle through. When I switch to the DVD section and attempt to send the output through the DVI port from the LG to the M1 on the 4805 I get the following message only " This disc is not available for viewing using the DVI monitor without HDCP capability. You may be able to view this disc using a different connector and removing the DVI cable." I get this error with any dvd disc I try, but yet when I try the same DVD discs on my laptop outpu the DVI port to connect to the M1 on the 4805 it works. Does anyone know if the 4805 is HDCP compliant ?

smithfarmer

12-01-05, 11:38 PM

And on a related note... As someone who has spent more time than I care to admit online at AVS in the 4805 thread(s) I'd like to comment on the supposed "noise" that allgedly pollutes our fair community.

If you want specs and interaction limited to strict technical 4805 talk, go read a FAQ or a manual or email tech support. Hanging around here is like hanging around in a virtual PJ shop with all the peripheral banter you would expect between the regulars. That's what makes it special. So if it takes you a few minutes longer to find the specific answer to your query when searching, count to ten and remind yourself that that is the price for participating in a living breathing community.

Couldn't agree more. This thread is really not like any others for that reason - and a huge reason why I still subscribe - and rarely venture out in the other threads - the others are just too boring!!

I most definitely agree.

The facts and nothing but the facts makes for an extremely boring read. The levity that has graced some of these posts helped to make the learning process rather enjoyable. Unlike the drudgery that it otherwise could have become, I looked forward to reading the original thread in my quest to gain the knowledge that was shared upon these pages.

I think on this thread I shall provide no meaningful info....and compete with Brian I Am for insiteful social commentary....
:D :D :D

Kras,

Many, many thanks go out to you for all the wisdom that you have imparted here. A lot of other PJ threads could only wish that they had somebody with your knowledge, background and experience to help them out, the way you've helped us.

You cut through the manufacturers hyperbole and give us the straight facts about what makes an image look the way it does. You have taken the time to share with us, something which you get paid by your customers to do.

You have done this and with a good sense of humor to boot.

We are indebted to you.

BTW, I hope to have those screens of the 360 and 4805 up this weekend. My new camera is taking me a little longer figuring out how to get good shots in low light using the manual mode.

smithfarmer

12-01-05, 11:51 PM

<personal opinion/exercising free speach> = avsforum mods have a mega POWER TRIP going on.
Nothing could be further from the truth. Kyser has been more than tolerant. Just because you haven't seen it, doesn't mean that corrective action hasn't already been taken.

cavu

12-02-05, 01:37 AM

http://www.cesweb.org/shared_files/techgirl/935/thumbnail935.jpg (http://www.cesweb.org/shared_files/techgirl/935/mainphoto935.JPG)

CEA Announces Technology is a Girl's Best Friend Diamond Product Showcase Honorees; CEA to Showcase What Women Want in Consumer Electronics at 2006 International CES (http://www.tmcnet.com/usubmit/-cea-announces-technology-a-girls-best-friend-diamond-/2005/dec/1216553.htm)

ARLINGTON, Va. --(Business Wire)-- Dec. 1, 2005 -- The Consumer Electronics Association (CEA(R)), producer of the world's largest annual technology tradeshow, the International Consumer Electronics Show (CES(R)), today [list]announced the honorees for the 2006 Technology is a Girl's Best Friend (TechGirl) Diamond Product Showcase, sponsored by CE Lifestyles.

"Women are buying and using consumer electronics; and retailers and manufacturers are paying attention," stated Gary Shapiro, CEA president and CEO. "Women influence 88 percent of household CE purchases in some fashion, and this year females are expected to initiate $65 billion in CE purchased themselves. CEA is pleased to play a leading role in disseminating the message that women have been and continue to be a large consumer and influencer of CE products."

Now in its fourth year, the TechGirl honorees were chosen based on results from a recently conducted survey by CEA Market Research. The survey, What Women Want, sampled more than 1,600 adults (men and women) to find what features women prefer in their consumer electronics devices. Eight distinct consumer electronics categories were explored: audio, computer, digital imaging, laptop bags, mobile/automotive electronics, portable audio, television and wireless.

"CE Lifestyles is pleased to sponsor this campaign," said Katie Sommer, editor of CE Lifestyles. "The products honored in this showcase illustrate that women want consumer electronics that can be used effectively and efficiently. Interest in style and flair is a concern but secondary to having a quality device. Women truly view CE products as a necessity, not a luxury."

Specifically, women cited ease-of-use, reliability and being lightweight as most important in their consumer electronics. Wireless phone preferred features included being lightweight and having a long battery life. Women surveyed also want portable audio devices that can "do it all," from receiving radio reception to MP3 playback. In the computer category, a flat monitor and computer speed was extremely important. The results showed the most important feature in television was having the best picture quality, specifically high-definition (HD). Audio and safety equipment ranked high in the mobile category. Great picture quality and the ability to easily share photos were top in the digital imaging space.

In both the audio and laptop bag categories, style and aesthetics ranked near the top of the list. The laptop bag features women most want include a comfortable strap and specialized pockets. Speakers that are aesthetically pleasing and not obtrusive rounded off the list. -0- *T The Diamond Products include: -- Audio: -- Denon Electronics' S-101 Home Entertainment System -- Swan Speaker System's Swan S200A -- Computer -- BenQ America's FP93V Flat Panel Monitor -- Sharp's M4000 WideNote -- Digital Imaging -- Hewlett Packard's Photosmart R817 Digital Camera -- Hitachi's Microdrive 3K6 -- Laptop Bags -- Motion System's Icon Female Laptop Tote -- Targus's Getta Backpack Ladies Case -- Mobile/Automotive Electronics -- Alpine's Blackbird -- Magna Donnelly's Video Mirror -- Portable Audio -- Philip's Sport Audio Player -- Sony's Walkman Bean -- Television -- InFocus's Play Big IN72 -- Sharp's 20-inch Widescreen AQUOS Liquid Crystal -- Wireless -- Motorola's Magenta RAZR -- Samsung's i73 *T

All winning products will be showcased at the 2006 International CES in the lobby of Innovations Plus at the Sands Convention Center and will be featured in CE Lifestyles magazine early next year. The 2006 International CES will be held January 5-8 in Las Vegas, Nev. For more information, visit www.CESweb.org/techgirl.

"Big Play" ???!!!

To summarize what we think we know:
480p
5x 6-segment colour wheel
3000:1 contrast ratio
12-element lens <?>
Fan noise < 20dB !!
HDMI+M1+Component+SVideo+Composite
HD2+
US$1299

MORE PIX and discussion (http://www.avsforum.com/avs-vb/showthread.php?p=6540959&&#post6540959)

Ja Phule

12-02-05, 02:31 AM

Anyway back to the question. Since the 4805 does the up converting within the component input (Only ?), I was thinking of using the HDMI connection out from the Yammy and connecting everything using one M1 male to HDMI out on the 5990 and letting the receiver do all the up converting. (then I could connect 2 HDMI and three component inputs to the Yammy and let it handle all the Video Up Conversion to HDMI) THen I could calibrate (which I need to get the DVE disk) the 4805 once and just sit back and enjoy. Does it sound like I am on the right track? I am a newbie for sure with all this new tech stuff, but especially with the connectivity issues.

Sounds good. I can help out a little bit, if you are going to use hdmi, then you will need to set the 4805's brightness and contrast at 50/50 but go into the advanced menu and set all your gains to 58 and all your offsets to 28.5. This is the studio dvi setting for the projector and the hdmi output on the yamaha should be sending out studio levels. However, you will need to calibrate your analog (non-hdmi) sources picture settings from within your yammy using the calibration dvd like avia, dve, or thx.

Ja Phule

12-02-05, 02:35 AM

The main issue with the search is that it searches the search term by date, rather than "relevance."

The main trick to figuring out which information is useful from the search is by seeing who the poster is. :)

uzziah

12-02-05, 02:54 AM

suggest budget dvd-player for the 4805? i've got my eye on a used panny rp91 for its apparent excellent 480i performance, and goes for under $100 used on ebay. $100ish is my price ceiling. i would think i'd want great 480i PQ, but i've heard some odd things like folks prefferening 480p better, though i can't understand why. thoughts? suggestions?

btw: right now all i have is an el-cheapo jvc vcr/dvd unit

pakman0209

12-02-05, 03:19 AM

Hey guys!
I just got my refurb 4805 yesterday. I haven't had time to open the box, but will do so this weekend and let you know how it goes. I have a question about my setup.

I am not able to mount the PJ on the back wall or on the ceiling due to a lease agreement with my university. My room is only 13 feet wide so I wanted to project the image from the side table next to my couch. Is it possible to project the image from an off center location? I read he whole new thread, checked the FAQ and also ran a search in the old thread but couldn't find anything (not really sure what term to search for).

I was trying to avoid projecting the image from the coffee table in front of my couch because it would dramatically decrease the image size. I hope someone can help me out with the off center projection question because I would love to move up from my dinky 27 incher to the full capability of the 4805.

Edit: From my outside reading, I understand that I should be able to project from an off center location, but I wasn't sure that this PJ does it and how far off center I could go without harming quality

cavu

12-02-05, 03:39 AM

Is it possible to project the image from an off center location?No.

How 'bout putting one of these (http://www.ikea.com/webapp/wcs/stores/servlet/ProductDisplay?topcategoryId=15561&catalogId=10103&storeId=12&productId=66548&langId=-1&parentCats=15561*15637*15648) behind your sofa and placing the projector on top?

gprro1

12-02-05, 03:40 AM

I may be having a heat/fan problem.

I got my refurb on Tuesday, new bulb(I think?), 1.21 firmware. The picture on a painted foam board with S-Video from a Samsung hd841 has been good, but not outstanding. Component should cure this I hope as the focus doesn't seem very crisp. The Criterion version of Fear And Loathing looked kinda fuzzy? Black level and color are much better than the Hitachi lcd I was using

Some early questions/ maybe problems:

1) The focus and zoom assembly (maybe entire lens) have a little play in them. I can move them enough to make the on screen image move about an inch or more. They don't turn perfectly smooth either, the zoom especialy has a couple spots that stick a little.
- anyone else have this, and is it normal?

2) How do you measure lumen output? I though this thing would be brighter, and was expecting to use ND filter, but on about 82 inch diagonal I don't think I would want a darker image, the screen is an eggshell gray though.

3) The thing that has me most worried now is the heat. My other PJ, you can feel forceful air being blown out the fan outlet. The 4805,I can feel lots of heat, but not much forced air. Even worse, above the heat outlet is getting very hot to the touch. Below the outlet is almost too hot to touch the bottom of the 4805. It's table mouted, and the table is very hot also. If it was a nice veneer I would be worried about it.
I actualy just turned it off in the middle of a movie. Fan sounds like it's working. This thing is fairly loud too, even in low power. However, it is only 3.5 feet behind me.
-Can anyone say if this is normal for these?

4) I do notice the slight pulsing in dark scenes associated with the new firmware, but hasn't been a real bother. More anoying is what looks like a light or greenish noise, somewhat like mild static, when close to the screen. More noticeable in dark areas, but is in the entire screen? I have no idea about this. Same with 2 different dvd players. Because of the S-Video maybe.

Thanks for reading, and sorry for being a little long, but I figured I would throw out all my questions and come back to them individualy if needed. Also to see if anyone with new refubs notices anything similar.

cavu

12-02-05, 03:54 AM

How do you measure lumen output?Use this screen calculator (http://www.infocus.com/service/sp4805/downloads/ScreenPlay%204805%20calculator%20with%20screen%20brightness. xls) to calculate your brightness. You will have to know the "gain" of your screen though. If you don't know that, for a simple white wall use 1.0; for a gray screen, use 0.8

The zoom/focus sounds relatively normal. The heat does not! Do you hear the fan cycling to a higher speed? It will do that if it detects that it is getting too hot.

gprro1

12-02-05, 04:04 AM

cavu,

Thanks for answering. Good to know someone is on here as late as I am(East Coast)

I did the screen calculater a couple of days ago, and even guessing at .8 gain, 72 in. width, I should be at 24 ft/l. I was just thinking my bulb may be slightly dim. I was wondering how to actualy measure the lumens.

The heat has me a little worried, I may try to contact Infocus.

Edit, I was typing then read your post. The fan did not cycle higher. I used high power for a bit, but still didn't feel much hot wind. I can't imagine using in high power. Really loud, nothing metalic or buzz saw like though

cavu

12-02-05, 04:21 AM

guessing at .8 gain, 72 in. width, I should be at 24 ft/l.Sounds about right. It may take a little time to adjust your reference points. You should calibrate the projector using Avia or even the THX "Optimizer" included on THX DVDs. Are you in a controlled light environment? Are your blacks "black"?

You need equipment to actually measure the foot-lamberts coming off the screen.

For reference:

The projector case directly above the exhaust will get "hot", but not too hot to touch. The amount of air moving through the system in low power isn't enough to "blow" a sheet of paper hung in front of it but high power will "blow" it slightly.

gprro1

12-02-05, 04:38 AM

I'm actualy doing a light fusion or similar diy screen soon. Trying to decide on how big still. No ambient light, but vaulted white ceiling and some white walls. pretty big room though.

Black are way better then the lcd I was using(350:1 CR). On the blank screen in a dark room I can still see a shadow on the screen from my hand. Definatly going with avia or dve with new screen.

The air movement is similar on mine. The bottom near the outlet is actualy a good amount hotter than the top. Not too hot to touch, but getting close.

Cutis 104 had a similar problem in the old thread recently. His actualy shut off and red light lit up.
I'll have to see what happened to his.

cavu

12-02-05, 04:48 AM

The bottom near the outlet is actualy a good amount hotter than the top. Not too hot to touch, but getting close.Mine is ceiling mounted so when I say "above the exhaust", it is actually the side of the projector with the feet. ;)

gprro1

12-02-05, 05:07 AM

There must be a connector or power supply piece on the "bottom". I just ran in high power for about 10 min. Bottom is hot. Can touch, slightly uncomfortable after 5 sec, or so. We'll see what happens. Good chatting, logging out for the night, er early morning.

Edit, one small spot too hot to touch for longer then a couple secs. Maybe I'm nit picking!?

MTyson

12-02-05, 05:48 AM

I just got my refurb yesterday.

I'm loving the picture, except with my HTPC I am noticing very faint light and darker vertical bars on the image. They are almost invisible, but I can see them. What's causing this?

Other than that it's fine on my nearly 9ft diagonal Silver Torus (horizontally/vertically curved) with a gain probably around 10. It looks like a 9ft Plasma TV even with the contrast at zero. :). Ambient light capability is unbelievable.

BTW, I didn't get a manual, so I'm not sure how to switch light output modes. I searched briefly, but found nothing.

Here are some screenshots I took with my camcorder (unfortunately it cannot capture that qualitiy I see in person):

This shot are (obviously) in ambient light. One 60-watt light 8ft infront of the screen and a 500-watt work light bouncing off of the wall onto the screen. There is a matte white piece of material for comparison. BTW, the room is a lot brighter than it appears in the photo (obviously, I'm sure you guys too have 60-watt light bulbs. :D ).

Sin City:
http://gallery.avsforum.com/data/508/Sin-City-3-_4805_.gif

Sin City #2:

http://gallery.avsforum.com/data/508/Sin-City-7-_4805_.gif

Clark Kent on Smallville:

http://gallery.avsforum.com/data/508/Smallville-17-_4805_.gif

Lex Luthor on Smallville:

http://gallery.avsforum.com/data/508/Lex-1-_4805_.gif

I have more ambient light images in my gallery (some with a 500-watt work light pointed right at the image from the side. I have a closeup where you can see that there is no image on the Matte white section, but a high contrast image is still on the Silver Torus). :D

Hughman

12-02-05, 07:33 AM

WHY? I haven't seen anything that would merit such an action, and I have been reading this and the last (now closed, but I don't know why) 4805 threads religiously for the past week. I'm certainly not complaining, so please do not construe this inquiry as such. I'm simply desperate to understand why the anxious anticipation to close out this and all other 4805 threads while I see clear violations of price posting policies, banter, trolling, and other violations on so many other threads of far less discussed and beloved products. Please help me to understand.

Kysersose was responding to a post which was quickly deleted, I presume, by the poster.

scottwood2

12-02-05, 07:57 AM

I setup my 4805 last night. This is my first 16:9 system. I have my Directv system figured out but when I played my DVD with a widescreen movie, the projector still shows the bars on the top and bottom unless I use the letterbox setting. I thought the native setting would display the full width image? Is this right?

I am using S video for the system.

Thx

MTyson

12-02-05, 08:12 AM

Adamesq

12-02-05, 08:30 AM

I just got my refurb yesterday.
Other than that it's fine on my nearly 9ft diagonal Silver Torus (horizontally/vertically curved) with a gain probably around 10. It looks like a 9ft Plasma TV even with the contrast at zero. :). Ambient light capability is unbelievable.
. . .

I was trying to find more info on the Silver Torus and ran across what appears to be your room, but under a different member name: http://www.dvdtalk.com/forum/showthread.php?t=445225

Anyway - the setup looks like you've made a nice cabinet around it. I still don't quite get the Silver Torus setup. It seems odd to me because you're going back to curved screen (like old CRTs) and a rear-projection sized cabinet. I've never seen one up close though.

Kysersose

12-02-05, 08:55 AM

Nothing could be further from the truth. Kyser has been more than tolerant. Just because you haven't seen it, doesn't mean that corrective action hasn't already been taken. Exactly.

I'm closing this for a while until the newbies get the point.
Stop questioning this thread! It's either this or nothing.

CLOSED UNTIL FURTHER NOTICE.

All new 4805 threads will be deleted without response.
I will re-open this thread later today.

Kysersose

12-02-05, 12:10 PM

There will NOT be a 4805 only forum.
Post here or don't post at all.

This has worked perfectly well for the X1 and for many other projectors.

If you have a problem with that then take it up via PM with the Mods or Alan.
Do not try and change things by arguing with the mods publicly. Doing so will result in deleted threads and having your membership temporarily revoked.

It it a privelage to be a member in this forum. We do not allow trolling and flaming here.

Carry on...

Alan Gouger

12-02-05, 12:11 PM

Please remember the Rules: No pricing other then MSRP. This thread will remain the dedicated thread for this model. Please do not take it off track and ruin it for others. If you have a complaint share it with the Admin or moderator. Do not start a separate post as that will do nothing to get the issue resolved.

Thank you.

tradewinds

12-02-05, 12:27 PM

Ok, back to the topics. How do you go about getting a Silver Torus screen built. I am very impress with the way it still shows with a 500 watt light straight at it.

Also, what mode do you use the 4805 with it. high or low? Thanks.

thedealmaker

12-02-05, 12:30 PM

Hi,
I just bought a Infocus 4805 and hang it on the ceiling. It's great, much better than my old epson powerlite s1+. I have several questions:

1. it seems that there is no way to "really" turn off the projector without climb up there and turn it off. The manual says that I can press the power button "twice", but all it does is to turn it back on again. If I press it once, it seems to be in a temporary off state but the led is still green. Now, I just first press the power remote button once, then pull the plug. Is it the right thing to do? Will it kill the projector or the lamp?

2. What's the difference between Low and High Power mode? One is brighter than the other, manual doesn't say much. Should I stay at low or high?

3. When I used epson powerlite s1+ projector, my room was just long enough to take advantage of the whole pull-down screen. But after switched to 4805, it can't use the whole screen. I already tried to zoom it using the ring as much as possible, but still can't. I can't move the projector any further back because the room is not long enough. Is there a workaround on this? Is there a way to zoom more besides the physically turning the ring?

Many thanks.

Ja Phule

12-02-05, 12:35 PM

Wireless AC switch. With this you can leave your 4805 hard switch to on. This device controls the on/off of the ac switch with a remote. Though, if there was a fluctuation in power, it may turn the 4805 back on. I'd recommend not sending the 4805 a picture source and turning on power save so that it will automatically power off after 20mins in case this happens.

http://www.radioshack.com/product/index.jsp?productId=2036303&cp=&kw=wireless+ac&parentPage=search

thedealmaker

12-02-05, 12:38 PM

In the manual, it says that I should press the power button twice to turn it off. What does it mean? I can press it once to go to off state, twice will turn it back on again.

Wireless AC switch. With this you can leave your 4805 hard switch to on. This device controls the on/off of the ac switch with a remote. Though, if there was a fluctuation in power, it may turn the 4805 back on. I'd recommend not sending the 4805 a picture source and turning on power save so that it will automatically power off after 20mins in case this happens.

http://www.radioshack.com/product/index.jsp?productId=2036303&cp=&kw=wireless+ac&parentPage=search

tradewinds

12-02-05, 12:47 PM

Ja Phule

12-02-05, 12:50 PM

In the manual, it says that I should press the power button twice to turn it off. What does it mean? I can press it once to go to off state, twice will turn it back on again.

I believe the manual is incorrect. If you press the power button once, you will see a message stating that if you press it again, it will cancel the powering down of the projector.

Ja Phule

12-02-05, 12:55 PM

Is there a reason/benefit to turn off the power from the switch or wireless remote setup? I keep mine on all the time. It is connected to a UPS but I do not turn off the PJ by using the switch so the fan still runs. Am I going to make the PJ life shorter by not turning it off? Thanks.

The main reason people want to do a hard power off is to stop the fan from running in standby. Letting the fan run can suck in more dust into the filters. As long as you keep the filter clean then it shouldn't be a problem. Also, if it is on standby, a power fluctuation can also cause the projector to turn back on, but this shouldn't be a problem if you are using a UPS.

However, using a cheap UPS (one under $500) can lead to problems of its own (I'm gonna let an AVS search find the answer to why).

tradewinds

12-02-05, 01:17 PM

well, my UPS is not over $500, it may be around $80 from APC. I guess I need to look up what the problems may be and consider switching to a surge protector only.

Roy

12-02-05, 01:32 PM

MaximAvs

12-02-05, 01:37 PM

I'd like to repost a question that came up earlier.

Does anyone have a Service Manual for the 4805?!

Or does anyone have 3 or 4 of these PJ to be able to tear one completely apart so we can see pictures?! :D :D

Sean

Ken Chin

12-02-05, 01:59 PM

Anyone using 50ft M1-DVI? Are there any drawbacks to image quality due to the long length?. I actually could do with only 40ft. Thanks.

wes nance

12-02-05, 02:18 PM

Hi,

First, I'd like to welcome all the new owners of the 4805 to this forum. Second, I'd like to thank AVS, Alan and the moderators for this incredible resource. I knew *nothing* about projectors before I hung out on this thread.

Third, and most importantly, for those new owners, *please* read through the 4805 FAQ that is linked in JaPhule's signature. It is really helpful, and will answer a lot of the basic questions we see over and over.

I'm no expert like Kras or anything, but many of these questions have been asked literally almost a hundred times in the old thread. We have really great folks who will answer them again and again, but since JaPhule wrote up such a great FAQ, let's start there! Then you can ask a more focused question, and we (they) can give you a better answer.

Thanks, and happy watching-

Wes

Ja Phule

12-02-05, 02:45 PM

Hi, Thanks for all answers to my question regarding brightness.

I have 2 more questions.

1. While projectorcentral 4805 review mentions that 750 lumen is pretty low and optimized screen size is only 90 inches, the author of 4805 FAQ said he need to use a ND2 filter to cut off 50% of the light otherwise it is too bright. I am really confused. I don't have screen yet.

2. I plan to get a M1-DVI adaptor as digital connection should provide the best quality. Last night I tried VGA-M1 cable came with the projector. I set resolution to 854X480 and video looks not great, and it does not show pixel to pixel sharpness I expected. It is not surprise as the cable is not bulky. Then I set laptop resolution to 1280x720 and let the projector to downsize the video to 854x480. It looks very good.

My question is which is better, DVI with 854X480 native resolution ourput, or VGA 1280x720 and projector to downsize to 854X480. The later solution would feed more details to 4805 and let the famous Faroudja to handle it.

Thanks in advance.

If you frequent AVS enough, you will find quickly that projectorcentral's reviews aren't exactly the greatest reviews out there.

The 4805 is 600 video optimized lumens. This is the lumens you will likely get (give +-10%) out of the box since the 4805 is well calibrated out of box. Take a look at another projector like the Sony HS51 that claims 1200 ANSI lumens that only puts out 250 video optimized lumens. In a dedicated home theater set up, you really don't need that many lumens. Most people only need around 300 lumens in their set up. You may see business projectors out with 2000+ lumens, and that's because these are presentation projectors that need to work well in rooms with lots of light, requiring more lumens and at the same time killing color accuracy (as this is not needed for presentations).

The main advantage of the Faroudja is its deinterlacing processing. Deinterlacing is done when you feed the 4805 a 480i (interlaced) signal to be deinterlaced to 480p by Faroudja. Feeding a signal from dvi or vga will be sending a progressive input, meaning no Faroudja deinterlacing (but Faroudja is being used to scale). With a dvi/vga connection, your pc is doing the deinterlacing, depending on what software you use, this can be a good or bad thing.

cbacklund

12-02-05, 02:46 PM

well, my UPS is not over $500, it may be around $80 from APC. I guess I need to look up what the problems may be and consider switching to a surge protector only.
This is more or less true, if you are extremely anal (in my opinion). I guess if you owned a really expensive pj you may want a kick butt UPS, but I know (and have seen on these boards) plenty of people that use a standard UPS and it works just fine. In my opinion, you're better off using one than nothing at all incase of brown outs. Don't want that bulb popping on you, from the power fluctuating on and off.

I've used a $30 UPS on my PJ for quite some time now and have never had an issue. Our house seems to have a lot of power sags in the summer when the central air is running, and this UPS saved me a lot of pain from the bulb having problems.

Luis Gabriel Gerena

12-02-05, 02:54 PM

My question is which is better, DVI with 854X480 native resolution ourput, or VGA 1280x720 and projector to downsize to 854X480. The later solution would feed more details to 4805 and let the famous Faroudja to handle it.
DVI wins in a no contest.

Ja Phule

12-02-05, 02:56 PM

DVI wins in a no contest.

And I thought you've disappeared. :)

cummings66

12-02-05, 03:29 PM

In the old 4805 thread there was someone mentioning that the DVI in on the 4805 didn't handshake properly with some devices, namely ones that didn't force output. So it worked with the test equipment at IF but apparenlty not with the users computer. Maybe it's similar...

I was the poster of that. What happened was the PJ broke, it would not handshake with the computer so the computer did not know there was anything attached and so the video card would not output to the PJ. It was not an issue with not handshaking with some devices, it just broke is all.

The issue was InFocus could not fix that kind of problem according to the tech because all they had was a DVI sig generator and it doesn't require handshaking to work. So they would not be able to tell a problem existed.

cummings66

12-02-05, 03:43 PM

Devedander,
from the LG to the M1 on the 4805 I get the following message only " This disc is not available for viewing using the DVI monitor without HDCP capability. You may be able to view this disc using a different connector and removing the DVI cable." I get this error with any dvd disc I try, but yet when I try the same DVD discs on my laptop outpu the DVI port to connect to the M1 on the 4805 it works. Does anyone know if the 4805 is HDCP compliant ?

From what I was told, the 4805 is not HDCP compliant nor are many displays. You'll see more and more problems like this as the future closes in on us. Hollywood just doesn't want us to copy movies and this is one way to prevent it. Windows Vista will support this standard and there will be a time when we'll all have to buy new displays including monitors for computers to show content like this.

To forgo the problem use component cables to watch your DVD for now. There is to my knowledge no solution, no hack etc.

cavu

12-02-05, 03:45 PM

projectorcentral 4805 review mentions that 750 lumen is pretty lowPC is full of it.

I set resolution to 854X480 and video looks not great, and it does not show pixel to pixel sharpness I expected. It is not surprise as the cable is not bulky."Bulk", per se, has nothing to do with it.

which is better, DVI with 854X480 native resolution ourput, or VGA 1280x720 and projector to downsize to 854X480. The later solution would feed more details to 4805 and let the famous Faroudja to handle it.DVI is a digital signal and is far, far superior.

VGA is a progressive analog signal. Also, all connections via the M1-DA on the SP4805 bypass the Faroudja filter.

cavu

12-02-05, 03:51 PM

the 4805 is not HDCP compliantThe DVI input on the SP4805 IS HDCP COMPLIANT!

Where do people get this stuff??!!

Has no-one got the ability to go to the Infocus web-site (http://www.infocushome.com/amer/eng/products/screenplay/sp4805.asp) and determine these things for themselves before making such fatuous statements??

jmac35

12-02-05, 04:05 PM

12-02-05, 04:06 PM

The 4805 is 600 video optimized lumens. This is the lumens you will likely get (give +-10%) out of the box since the 4805 is well calibrated out of box. Take a look at another projector like the Sony HS51 that claims 1200 ANSI lumensIs that on high or low bulb setting? Can you provide the lumens for the other bulb setting as well please?

wes nance

12-02-05, 04:13 PM

The DVI input on the SP4805 IS HDCP COMPLIANT!

Where do people get this stuff??!!

Has no-one got the ability to go to the Infocus web-site (http://www.infocushome.com/amer/eng/products/screenplay/sp4805.asp) and determine these things for themselves before making such fatuous statements??

Cavu,

Infocus' official statement is that the 4805 is indeed HDCP compiant, but HDCP problems are tricky to troubleshoot, because everybody pretty much claims that their DVI input or output is HDCP compiant.

Of my components connecting to the 4805 via DVI, only my OPPO dvd player will correctly handshake with it. My Zenith 318 DVD over DVI and my SA 8300 HD DVR box over DVI both refuse to work with the 4805. Now the SA is known to have HDCP issues, but SA doesn't really acknowledge that fact either.

It's possible that newer firmware on the 4805 has improved it's ability to play well with other HDCP folks, but for now I've got my HD box connected over component and my dvd player over DVI. Don't get me wrong, I'm happy as a clam with this setup, but I did need to find a new dvd player that did well over DVI, since my original plan was to connect the 318 over component (no problelm) and the 8300 over DVI, which locked up all the time. That didn't work, so I tried 8300 over component (no problem) and the 318 over DVI, which locked up. So I ended up with the OPPO over DVI, which works great, and I'm happy!

Wes

tradewinds

12-02-05, 04:18 PM

Ja Phule

12-02-05, 04:34 PM

Is that on high or low bulb setting? Can you provide the lumens for the other bulb setting as well please?

600 lumens is on low, it is 750 (as quoted in specs) in high.

rheide

12-02-05, 04:38 PM

Roy

12-02-05, 04:44 PM

Thank you for all answers. I will buy a M1-DVI cable.

spyder696969

12-02-05, 05:04 PM

My 4805 arrived today. My initial plans may have to change a little but I wanted to check with you guys first. My wife wasn't excited about hanging it in the room so I thought I would hang it right inside my office and create a hole so it could shine through. This would be a distance of 19 feet. I would like the screen to be 6 feet wide (our wall is limited by a few things. Currently at 19 feet the image is about 9 feet wide. So... my question to you guys, is there a way to make the image smaller besides the zoom thing?

I'm projecting this on our beige wall and it is simply unbelievable.

Thanks in advance for all the help now and in the future.

Even if it were possible to shrink the image, I think that this is an extremely bad idea for a number of reasons. The biggest being that I would assume to put the image through the wall, the PJ would have to be either IN the wall iteslf, or right up against it, exactly where the PJ expels all the hot airflow. :eek: Either scenario would certainly be bad for the PJ, but could also pose a risk of a fire, thus burning down all your wife's precious things that she has hung in the room, like cute little pictures of ducks or cows, or whatever. ;) Seriously, unless someone out there can see a way around the heat and airflow issues, I believe this could be an extremely dangerous installation method. :(

cavu

12-02-05, 05:06 PM

My SA 8300 HD DVR box over DVI both refuse to work with the 4805. Now the SA is known to have HDCP issues, but SA doesn't really acknowledge that fact either. My Moto 6412 HDCP works just fine over DVI with the SP4805. I've never had any problem with HDCP with any DVDs either.

It's possible that newer firmware on the 4805 has improved it's ability to play well with other HDCP folksI'm using the year-old v1.13 firmware.

My point is that people shouldn't wildly claim the box is not HDCP compliant (or any other issue) without have some substance to back it up. :(

12-02-05, 05:20 PM

600 lumens is on low, it is 750 (as quoted in specs) in high.Thanks. Just wanted to verify that because I'm trying to decide on a screen.

tivo1

12-02-05, 05:27 PM

Wes,

I too have the oppo, and the 4805, I was wondering what settings you are using?

which Faroudja chip is actually doing the processing? Resolution your outputting from the dvd player? color and other settings?

Thanks

Cavu,

Infocus' official statement is that the 4805 is indeed HDCP compiant, but HDCP problems are tricky to troubleshoot, because everybody pretty much claims that their DVI input or output is HDCP compiant.

Of my components connecting to the 4805 via DVI, only my OPPO dvd player will correctly handshake with it. My Zenith 318 DVD over DVI and my SA 8300 HD DVR box over DVI both refuse to work with the 4805. Now the SA is known to have HDCP issues, but SA doesn't really acknowledge that fact either.

It's possible that newer firmware on the 4805 has improved it's ability to play well with other HDCP folks, but for now I've got my HD box connected over component and my dvd player over DVI. Don't get me wrong, I'm happy as a clam with this setup, but I did need to find a new dvd player that did well over DVI, since my original plan was to connect the 318 over component (no problelm) and the 8300 over DVI, which locked up all the time. That didn't work, so I tried 8300 over component (no problem) and the 318 over DVI, which locked up. So I ended up with the OPPO over DVI, which works great, and I'm happy!

Wes

rheide

12-02-05, 05:29 PM

dccebby

12-02-05, 06:06 PM

Elfman

12-02-05, 06:13 PM

I have a question concerning HTPC. I'm running my 4805 to my PC via DVI and I'm noticing when the PIC changes from bright to a dark scene there appears to to be a quick flash. I'm using a GeForce 6200, TheaterTek DVD player and my PC is an Athlon XP 3200+ with 512MB. I also have a PLV-Z2 and the same thing happens with that one as well. Any help would be appreciated.

Greg

What firmware is your 4805 running? You may be experienceing the known 'flicker' that started with the 4805 with firmware version 1.13. It has been reported by component users as well as DVI users (Da GamePimp had it over DVI if I recall) and can happen several times a minute or once every couple minutes. It happens in bright scenes as well but it is hard to notice. Dark scenes really make it stand out.

It happens to a handful of 4805 owners out there (myslef included) and there isn't really anything that can be done about it except reverting to firmware version 1.02. I am running 1.02 until they release a firmware that fixes this issue.

InFocus has supposedly found a fix for this (took them quite some time to replicate this issue) but has yet to release it in a firmware patch.

b4uxit66

12-02-05, 06:14 PM

From what I was told, the 4805 is not HDCP compliant nor are many displays. You'll see more and more problems like this as the future closes in on us. Hollywood just doesn't want us to copy movies and this is one way to prevent it. Windows Vista will support this standard and there will be a time when we'll all have to buy new displays including monitors for computers to show content like this.

To forgo the problem use component cables to watch your DVD for now. There is to my knowledge no solution, no hack etc.

cummings66,

Thank you for the response, I will be doing some more research on this HDCP compliant issue. It is frustrating not to get the 4805 to do what the manufacturer says it is capable of doing, I will return my LG lst-3510A and get one of the oppo dvd players with DVI out.

dccebby

12-02-05, 06:19 PM

Elfman, thanks for the response. The same problem happens on my PLV-Z2.

scottwood2

12-02-05, 06:39 PM

rheide

I have had my X1 in the wall for over 2 years. My new 4805 is in the same spot. What I did was cut a hole in the wall and frame it. It is about 2 inches bigger all around than the projector. On the back side (which is a bedroom) I added a shelf extending from the rectangular hole. I put some sticky feet on the top of the projector and flipped it upside down on the shelf. I used post-it note pad under the back feet to raise the projector and align it with the screen. I framed the back side as well and added some nice molding to the shelf.

It is just above a large framed painting in the living room. I made the frame around the hole somewhat match the painting. I really like how it turned out. Kind of like having a projection room. I know the heat was not an issue at all with the X1. Just put up the 4805 up there last night. I will double check but I don't think there is any issue with this one as well. Key here that the air flow can go all around the projector and it is not pushed up close to a piece of glass at the wall. Most would not want to cut a hole in their dry wall but it would not be that hard to patch if I had to.

Good luck

MTyson

12-02-05, 06:57 PM

I was trying to find more info on the Silver Torus and ran across what appears to be your room, but under a different member name: http://www.dvdtalk.com/forum/showthread.php?t=445225

Anyway - the setup looks like you've made a nice cabinet around it. I still don't quite get the Silver Torus setup. It seems odd to me because you're going back to curved screen (like old CRTs) and a rear-projection sized cabinet. I've never seen one up close though.

It was originally made for my CRT projector (to give it digital like brightness). It works great with the 4805 though. It's made to look like a big RPTV (although it's only 13" in depth like one of those thin DLP RPTVs), but I plan to make it look like it's built into the wall.

The curving allows me to use a super high gain material (I believe mine is around 10 gain). Without the curve a 4805 would be a bright hot spot in the middle with dark sides. Curving makes it one big hot spot.

The colors are way better than on your typical white screen. It gives my 4805 plamsa like brightness on low power mode even with the contrast at zero. It gives it "pop" like you wouldn't believe.

It gives great ambient light results. It crushes the abilites of many screens costing a grand or two and cost me a total of $160 (including the tools to make it). What's not to get? :D

BTW, the curves are pretty shallow (4.6" deep horizontally and 2.75" deep vertically. So about 7" deep at the very center). From a seated position it looks flat.

I have a thread in the screens forum going on right now.

Quaid

12-02-05, 07:01 PM

Wondering if anyone can clarify this for me.

I'm finally getting around to buying a ND2 filter for my pj. The store I spoke with will order me one but the salesman referred to it as "62mm Hoya Super HMC ND2".

I just want to make sure that that is the correct model, because I don't recall seeing the "super" part mentioned in any of the hundreds of posts on this filter.

I assume it's the same thing but want to be sure.

thanks,
jmac

I am pretty sure any of the 62mm ND2 filters will work, with none of the extra frills being necessary for this application. I searched all of the camera stores in my town and found 1 store that had 1 ND2 left. It was a plain-jane ND2 from Hoya. I am pleased with the results. People don't seem to use filters as much with the advent of digital photography. As a result, it may be that the only ND2 filters Hoya is producing or shipping are the higher end ones, and I just bought old stock. If you can get a cheaper one without the HMC or Super designations, it should be all you require. If the HMC Super is all that is available to you, order it and then judge the results for yourself! If you are happy with the result, then it worked!

tradewinds

12-02-05, 07:25 PM

Although I have read that after a while the ND2 may loose it's effectiveness and need replacement. Not sure if the HMC or Super means that that is minimized or less likely to occur. I had the same questions and concerns but I could only find one place online that had them in stock.

krasmuzik

12-02-05, 07:26 PM

480p[/list]
5x 6-segment colour wheel
3000:1 contrast ratio
12-element lens <?>
Fan noise < 20dB !!
HDMI+M1+Component+SVideo+Composite
HD2+
US$1299

MORE PIX and discussion (http://www.avsforum.com/avs-vb/showthread.php?p=6540959&&#post6540959)

You are thinking all wrong if this is on a techgirl list....no specs for one. It is shiny. It is pretty. It is black. It lets you snuggle with hubby. Now just imagine you both at the store picking out speakers to match........that are flat and tiny and shiny and pretty. They sound like $%$(*& - but they sure are cute! Do you think the store has a shiny black purse to match?

That's right we all need to find a new hobby - take up woodworking - something involving power tools - something manly. I was going to say DIY speaker building but then where would you put the results? Garage shop speakers - YEAH BABY!

cavu

12-02-05, 07:35 PM

It gives my 4805 plamsa like brightness on low power mode even with the contrast at zero.You keep saying "contrast at zero". Surely that isn't what you mean!? The contrast and brightness should be at or close to 50, not zero, when the SP4805 is calibrated.

dccebby

12-02-05, 07:40 PM

Any help Please!

Greg

cavu

12-02-05, 07:45 PM

It is frustrating not to get the 4805 to do what the manufacturer says it is capable of doingThe SP4805 has no specific problem with HDCP.

I will return my LG lst-3510A and get one of the oppo dvd players with DVI out.If you are getting a new DVD player with DVI, why don't you get one that is capable of 1:1 pixel-mapping and which will optimize your 4805 setup and give you the best possible DVD image?

Check the V Inc. (Bravo), SanZio and Momitsu units. Currently, they are the only ones capable of pixel-mapped DVI outputs. You can find Bravos for ~$100-$200 on eBay and get new SnaZio or Momitsu units for $200-$350 MSRP.

dccebby

12-02-05, 07:51 PM

cavu

12-02-05, 07:54 PM

Although I have read that after a while the ND2 may loose it's effectiveness and need replacement.An ND2 filter neither loses its effectiveness nor ever needs replacement!! It's a piece of glass!

What happens is that you initially put the filter on because the lamp is too bright. As the lamp ages it begins to dim. At some point, you remove the filter to achieve a brigher image. When you eventually replace the lamp, you put the filter back on again because it will be too bright again. Capice?

Hughman

12-02-05, 08:13 PM

Do you think the store has a shiny black purse to match?

That's right we all need to find a new hobby - take up woodworking - something involving power tools - something manly. I was going to say DIY speaker building but then where would you put the results? Garage shop speakers - YEAH BABY!

LOL, after viewing the photo in the desperate "teckgirl" ad lit the first thought that came to mind was how much the pj resembles a womans evening purse. Then I remembered that you had, jokingly, taken some credit for this new look and I laughed some more at the fathers like pride you must be feeling for being partially responsible for the new direction "teckgirl" marketing strategy. All they need is the handle on the front like the 7205 and a compartment for a few pads and they got themselves a real winner.

krasmuzik

12-02-05, 08:26 PM

On the issue of filter longegivity I just pulled a Hoya HMC FL-D that is in use for five years. My only recommend is buy somewhere that gives you the freebie Hoya lens cloth. It had a bit of caked on dust that got cooked. Nothing a little windex cannot cure - just not sure if you are supposed to use windex on filters - I am not a camera guy.

krasmuzik

12-02-05, 08:57 PM

LOL, after viewing the photo in the desperate "teckgirl" ad lit the first thought that came to mind was how much the pj resembles a womans evening purse. Then I remembered that you had, jokingly, taken some credit for this new look and I laughed some more at the fathers like pride you must be feeling for being partially responsible for the new direction "teckgirl" marketing strategy. All they need is the handle on the front like the 7205 and a compartment for a few pads and they got themselves a real winner.

If it comes out with pink accents like the laptop purse in the CEA page - let me go on record that this was not my idea!

gprro1

12-02-05, 09:02 PM

Hey Kras,

I figure you have probably had more experience with numerous 4805's than most here. I'm a little worried about the heat mine is producing. It's table mounted, and above and below the heat outlet is getting pretty hot. The bottom, right under the vent in particular is actualy too hot to touch for more than a second or two. Any thoughts?

It's also not as super bright as I was expecting. Still bright, but I don't know if I need an ND2. I have one of the recent refurbs, shooting onto a gray painted foam board usualy at around 80 or so diagonal, low power. I wonder if some of the energy/ electricity is getting turned into heat instead of light from the bulb?

MTyson

12-02-05, 09:03 PM

You keep saying "contrast at zero". Surely that isn't what you mean!? The contrast and brightness should be at or close to 50, not zero, when the SP4805 is calibrated.

Do I keep my contrast at zero? No. Could I with this screen and still get a picture that out does a regular white screen? Porbably. :D I was simply making a point about the screen's superb brightness and pop.

A Contrast of 50 with a Silver PVC Torus screen is too much in the dark, unless I want to go blind. :) 50 is fine for ambient light, but I'm running the 4805 on about a 10 gain screen. It's brighter than a 42" plasma tv at 50.

This screen requires a bit different contrast calibration. It's not your typical 1.0 or 1.3 gain white screen. The whole pont of a Torus is so that CRT owners could turn down their contrast (while still getting a brighter picture) to extend tube life. I know, because I am also a CRT projector owner/tweaker too, :)

With the lights on 50 is a good contrast setting, but for the dark 25 is more than enough and 35 is bordering on overkill. Once I push past 25 I start getting a picture brighter than those tiny plasma TVs. :)

I also do some calibrating via HTCP using FFDShow. I have a stunning picture right now (coming from a CRT owner).

.

spyder696969

12-02-05, 09:15 PM

spyder696969 - thanks for the input. Burning down the little pictures of the cows would be a bad thing so I think I'll put it out in the main room. BUT, now I have another issue. I would need to run my wires (composite/power) back to the office which would be about 5 feet away (maybe less). The joists above the ceiling are perpindicular to where I need to go. So .. are there any tricks to getting the wires back there or shall I just use some sort of wire track (I read about that here somewhere) and run them along the celing? The alternative is running them all the way around which would put it at around 25 feet of cabling.

There is always someone else that makes the final decision. I just try to provide the most options. :-)

I would personally wire track it, on the ceiling as you described. You can get a fairly clean look that way, with minimal invasiveness to your wife's cow theme...or maybe she could "polka dot/cattle patch" the track to match. :D I really can't see how you could shrink the image to your desired size at that distance, so I think that the in-the-wall technique is out regardless.

thedealmaker

12-02-05, 09:58 PM

Hi,
I mounted my 4805 on the ceiling. It plays 16:9 videos fullscreen fine. But when I play 4:3 videos, it leaves right and left black. I can't find a way to tell it to use the whole screen to play 4:3 video. I don't want to use letterbox because it cut the top and bottom. What should I do?

Many thanks.

cavu

12-02-05, 10:06 PM

I can't find a way to tell it to use the whole screen to play 4:3 video. I don't want to use letterbox because it cut the top and bottom. What should I do?Unless you want to grossly distort the image you watch 4:3 images exactly as you see them, 4:3 with bars on the sides.

mprover

12-02-05, 10:44 PM

I know that there will be vertical bars on most DVDs , but is it normal for a 4805 to have a couple of columns of pixels (5 colums around) on each side of the DVD? Im feeding it svideo ( I KNOW, I dont know how to do 480i over my dvd players component) , I dont know if that makes a difference. I also noticed it on XBOx (also svideo)

therealgeno

12-02-05, 11:30 PM

Any Ideas, Anyone

Thanks Greg

Please tell us which firmware you are using. Go into the About menu and look at the software number. It will read 1.02, 1.21, or 1.13.

wes nance

12-02-05, 11:47 PM

The SP4805 has no specific problem with HDCP.

If you are getting a new DVD player with DVI, why don't you get one that is capable of 1:1 pixel-mapping and which will optimize your 4805 setup and give you the best possible DVD image?

Check the V Inc. (Bravo), SanZio and Momitsu units. Currently, they are the only ones capable of pixel-mapped DVI outputs. You can find Bravos for ~$100-$200 on eBay and get new SnaZio or Momitsu units for $200-$350 MSRP.

Pixel mapping is great, but not the end all of everything. I would rather have the dependability of my OPPO, and it's great de-interlacing, etc., then the Bravo. There are many Bravo owners that have checked in on the OPPO thread and prefer the picture of their OPPO, some of them with the 4805.

My personal preference is the OPPO, I haven't had a single problem with mine, with the build quality, etc., it reads everything I put into it. I wanted to buy a Momitsu or Bravo originally, but reading the forums here talked me out of it. The Snazio wasn't available at that time, so I don't know much about it.

Ask around in this forum, the OPPO paired with the 4805 over DVI is a *very* good combination. There are several people running OPPO's. . .

Wes

ps also with regard to HDCP, the 4805 *does not* work with certain components over DVI, that is fact. Whether the problem is on Infocus' side or the other is impossible to determine, since all the companies involved claim to be HDCP compliant. Just because you never had a problem doesn't mean everything works as advertised. . .

wes nance

12-02-05, 11:52 PM

Wes,

I too have the oppo, and the 4805, I was wondering what settings you are using?

which Faroudja chip is actually doing the processing? Resolution your outputting from the dvd player? color and other settings?

Thanks

I've got my 4805 set up with Bob William's gains/offsets numbers (reference JaPhules's FAQ) and currently have brightness set to -3 on the OPPO, contrast at 0, saturation at +1 (I think) and CSS off, NR at 1 or 0, and I think I have Truelife on.

Someone posted OPPO/4805 settings back in the old thread, I think, you could search for them there. I'm pretty sure I'm remembering everything without going back into the menus to look. . .

Wes

nh03

12-03-05, 12:00 AM

I am a new comer of the projector world, I turned on my 4805 for about 10 minutes, the down side of 4805 (I placed it on a table for the very first test) is really very, very hot, just like on fire. Is this normal? Thanks!

rod319

12-03-05, 12:27 AM

I have had my 4805 for about a month. After fighting what appeared to be "ground loop", I discovered I think it was a "mess of cables". Behind my entertainment center I pulled all the power cords to one side, while pulling everything else to other side. A little cable management. Problem gone.

I also just received my ND2 filter in the mail today. WOW! I thought it made everything look much more film-like. When I went to see Harry Potter in the theater I was trying to pay attention to brightness and contrast. When I returned home and saw my 4805, I decided I needed just a little bit of help and ordered the ND2. All the newbies should look into this.

Need some sleep tonight so I can stay up later tomorrow night watching more movies....

Rod319

cavu

12-03-05, 12:40 AM

I know that there will be vertical bars on most DVDs , but is it normal for a 4805 to have a couple of columns of pixels (5 colums around) on each side of the DVD? Im feeding it svideoIs there supposed to be a small black border on the left and right side of the image?This would appear to be normal, I noticed the same slight black border of pixels. These will never be part of the signal so zoom the image out.I too have a black border.OK you guys!! Y'all made me feel like I was losing my mind. I have no black borders around the image at all! My image is exactly the same size as the blank white screen. I had no idea what y'all were talking about.

But mprover made a comment that got me thinking.

I found an S-Video cable and tried that instead and guess what?? I now have 5-pixel black borders on the sides and and 2-pixel black borders on the top and bottom.

I have no black borders because I am using a DVI digital connection for all sources.

I don't know what happens with component or composite as I have no cables to try.

So ... if you want to get rid of the borders around your images, get a DVI cable.

Clams Canino

12-03-05, 12:41 AM

When I returned home and saw my 4805, I decided I needed just a little bit of help and ordered the ND2. All the newbies should look into this.

Rod319

Yes they should............. this as opposed to adjusting the "contrast" like it was some kind of CRT unit to fix the "brightness" issues resulting from those 600 lumens. Sigh

All a newbie has to do outta the box is hook it up and pop in a Star Wars DVD and go into the THX Optimizer in the special menu. Then just follow the instructions George gives you. That's IT - it's really that close to perfect. Now go pop your popcorn.

If the thing is "too bright" after THXing it, then go get the Hoya ND2 Filter and use it for the 1st 1500 hours or so. Don't screw with the THX calibrated settings. the filter does not change them.

If you are unnaware of the theory of diminishing returns, then read this whole thread (and it's predessesor) to get that extra 2% of performance out of your new toy. Some of us are Tweakophiles - it's a geek thing. If you're more of a movie buff than a Tweakaholic - then you're all done.

-W

cavu

12-03-05, 01:23 AM

All a newbie has to do outta the box is hook it up and pop in a Star Wars DVD and go into the THX Optimizer in the special menu. Then just follow the instructions George gives you. That's IT - it's really that close to perfect. Now go pop your popcorn.Very good advice!

The only thing to add is that, if you are using DVI or HDMI sources (other than a PC), set the RGB Gains to 58 and the RGB Offsets to 28.5 (The famous Bob Williams numbers). In fact, if you are using DVI or HDMI sources, you can actually skip the THX alignment - you will end up with the projector's default settings!! ;)

Then you are truly done and will have a world class image!

beerman126

12-03-05, 04:00 AM

WOW.....got my refurb yesterday and can't believe the picture for the $. That was a great deal. I could not be more pleased. Thank you all for your input. I am projecting from the floor for now. I have to remove a ceiling fan and then work around a 6" support beam conveniently in the middle of my room. I am looking at about a 15-20' throw. I want a 96" diag, I hope I can make it work w/out having to move the projector every time I watch it. Regardless, I am amazed by the picture.

cavu

12-03-05, 04:50 AM

I am looking at about a 15-20' throw. I want a 96" diagWelcome to the family!!

The zoom range of the SP4805 dictates that it be located 12.4 - 14.9 ft back for a 96" screen.

Hughman

12-03-05, 08:14 AM

OK you guys!! Y'all made me feel like I was losing my mind. I have no black borders around the image at all! My image is exactly the same size as the blank white screen. I had no idea what y'all were talking about.

So ... if you want to get rid of the borders around your images, get a DVI cable.

Hi Cavu, cabin fever setting in yet?

I'm using the 4805's digital input from an S97 so there goes that theory. As I mentioned in a previous post I have counted the active pixels on the "blank screen" and get the full 854, the black/gray border is outside this area. The black border area appears to be made from pixel-like structure so I've surmised, rightly or wrongly, the cause is due to a non-active border of pixels within the DMD.

Cropping issues still arise when flipping to S-video which reduces the 854 resolution, the root cause appears to be an entirely different animal.