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post #121 of 429 Old 06-21-2011, 09:24 PM
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right now i have a 92" high power screen with 2.8..i want to get a bigger screen 120" because i will be getting a new house and the home theater room will be 16'x35'...should i stick to the high power white or hchp? why did they change the gain from 2.8 to 2.4?
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post #122 of 429 Old 06-22-2011, 05:10 AM
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Stay with the HP unless you plan to watch with lots of lights on.
They say they changed to have a more consistent product but I would guess the manufacture stopped making the material. The new stuff looks as if it is cheaper to manufacture and has slightly better off axis gain.

Doug

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post #123 of 429 Old 06-22-2011, 05:44 AM - Thread Starter
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Quote:
Originally Posted by raymondeast View Post

right now i have a 92" high power screen with 2.8..i want to get a bigger screen 120" because i will be getting a new house and the home theater room will be 16'x35'...should i stick to the high power white or hchp? why did they change the gain from 2.8 to 2.4?

tough call. 2.8 is better, 2.4 isn't horrible by any means but I can see the desire to go bigger as well.
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post #124 of 429 Old 06-22-2011, 07:02 AM
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Quote:
Originally Posted by raymondeast View Post

right now i have a 92" high power screen with 2.8..i want to get a bigger screen 120" because i will be getting a new house and the home theater room will be 16'x35'...should i stick to the high power white or hchp? why did they change the gain from 2.8 to 2.4?

I think it depends on the max viewing angles.

Within a certain angle you'd be better off with the HCHP, unless the room is a batcave and always dark for viewing.

Noah
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post #125 of 429 Old 06-22-2011, 08:47 AM
 
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Quote:
Originally Posted by raymondeast View Post

right now i have a 92" high power screen with 2.8..i want to get a bigger screen 120" because i will be getting a new house and the home theater room will be 16'x35'...should i stick to the high power white or hchp? why did they change the gain from 2.8 to 2.4?

Can you confirm that the home theater room will be a dedicated theater?

Benito
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post #126 of 429 Old 06-23-2011, 01:43 PM
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Stewart showed a new material at Infocom last week. They're calling it Reflections Active 170. Apparently it is optimized for use with active 3D and 2D projectors on larger screen sizes. It's claimed to balance the competing needs of lost light recovery from 3D filtering and glasses, while maintaining uniformity. Peak gain is 1.7 (70% elevated gain over matte white); half gain viewing angle is 40 degrees.
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post #127 of 429 Old 06-29-2011, 09:48 PM
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Quote:
Originally Posted by Benito Joaquin View Post

Can you confirm that the home theater room will be a dedicated theater?

Benito

yes the room will be just a home theater room
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post #128 of 429 Old 07-02-2011, 09:17 PM
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okay it sounds like this HCHP is what I need, but I'm still new at this, my setup:

In our bedroom, just me and wifey lay directly 3 feet under center of projector (Epson 8350) No other movie watchers from any other angles

No light control - we have white walls ceilings etc

Brightness uniformily doesn't matter to me, only redirecting bounceback light for preserving highest contrast because shadow detail and black levels are the most important thing to me as I will have plenty enough brightness from 9 feet away on 100" manual pulldown screen

Is this what I need? or just regular HC 1.1 gain, or HP white> ahhhh!!!!
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post #129 of 429 Old 07-03-2011, 04:07 AM
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call dalite and order sample 3' may be to high to get the advantage. 12-24 is where you need to be.

Doug

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post #130 of 429 Old 07-03-2011, 09:00 AM
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12"? wow thats close! I use the dynamic Irus, now way I'd want my head to be 12 inches from the PJ
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post #131 of 429 Old 07-03-2011, 09:49 AM
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Quote:
Originally Posted by lemansfanatic View Post

12"? wow thats close! I use the dynamic Irus, now way I'd want my head to be 12 inches from the PJ

That would be for max gain.. but 3' puts you out of the cone. Order some samples and see how it looks.

Doug

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post #132 of 429 Old 07-04-2011, 12:11 AM
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Oh guys you have written amazing suggestions...Great job..
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post #133 of 429 Old 07-04-2011, 03:19 PM
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Is the Da-lite HP 2.35:1 screen custom order only? I have looked online and only seen it in HDTV format. Thanks.
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post #134 of 429 Old 07-05-2011, 01:19 PM
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I think all Dalite orders are custom; when you order a screen from a dealer they place the order w/Dalite who then ships it to you.

Noah
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post #135 of 429 Old 07-11-2011, 04:41 PM
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Hey guys, looking to get the Hi Power 2.4 white...

but I am in a angular reflective set up at a throw of 21 feet away, DLA HD 950, viewing at 19 feet, with a projector ceiling mounted, and the lens 13.5" from the ceiling (10 feet high less 13.5")

This is primarily for Xbox 360 games, in a fully light controlled room.

Can I get by with this screen?

Thanks for your info.

Other options are studiotek 1.3
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post #136 of 429 Old 07-12-2011, 07:01 PM
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Quote:
Originally Posted by Pete View Post

Stewart showed a new material at Infocom last week. They're calling it Reflections Active 170. Apparently it is optimized for use with active 3D and 2D projectors on larger screen sizes. It's claimed to balance the competing needs of lost light recovery from 3D filtering and glasses, while maintaining uniformity. Peak gain is 1.7 (70% elevated gain over matte white); half gain viewing angle is 40 degrees.

I'm wondering how this will be for 2D viewing?

Anyone have any experience with this?
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post #137 of 429 Old 07-14-2011, 05:13 PM
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2020
This won,t work with what you suggested. The PJ must be close to your head to benefit from the gain. It,s not a angular but a retro reflective surface meaning the light path is contained along the axis from PJ lens to screen and back to the lens, so your coconut needs to be close to this axis.
No more than an arms throw from that straight line axis.

Regards
David

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post #138 of 429 Old 07-23-2011, 05:04 PM
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OK, FINALLY I have my new HP2.4 (white) screen. To recall, I sold my 4 yr old 2.8 HP (110x62) because I wanted a larger screen. It sold quite fast (and the new owner is very pleased with it--had to be shipped from CA to GA, but made it fine). I had planned for several weeks to look at the pic on the wall, to be sure of exactly the size I wanted, and how the pj (RS20) would work with it, etc. Unfortunately when the new screen arrived it did not have the ProTrim material on the frame, as I ordered it (and my dealer correctly ordered), so had to wait for another one to be made and shipped (all at Dalite's expense--they are a standup company!). It arrived yesterday, and I put the frame together last night, and today my daughter and son-in-law helped me snap on the screen material and get it mounted on the wall.

I settled on a 'hybrid' size, 144x72 (2.0 W/H ratio), to have a 16x9 pic that is 128x72 (with black bars on the sides) and zooming for a 2.35 pic that is 144x62 (with blacks bars above/below). This all works great; I'm very pleased with the result, though I would certainly enjoy a pj with lens shift/zoom memory. (I sit ~ 12 ft back, so 1.0 screen widths for 2.35, and 1.1 for 16x9; i.e., pretty close, but that's what I decided I wanted--and I LIKE it.)

My RS20 has over 1800 hrs on it and is down to ~ 300 lumens, so I was assuming that I would need to get a new lamp, but to my surprise the pic looks very good, even though this amounts to only ~ 11 ftL. I do, though, have ProtoStar 'flocked' black material on side walls and ceiling, and no external light, so that helps a great deal, as well of course, with the eyes' amazing way of adjusting. Still, I'm sure I will like a brighter pic better. (Am planning to do a pj upgrade this fall, so not sure whether or not I'll get a new lamp or not.)

The HP2.4 shows a beautiful pic, so smooth, with absolutely no hint on hotspotting or any artifacts. Probably better in this regard even than the HP2.8, though I never had any problems with it. Viewing width is no issue for me, since this large screen goes almost wall to wall. Brightness uniformity is excellent over the hold screen.
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post #139 of 429 Old 07-23-2011, 05:28 PM
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PS One important note: I had Dalite samples of both the White and the HC versions of the new HP2.4 screen material. The HC material showed considerable brightness drop off at the edges of the screen--presumably because of its narrower viewing angle--while the White material was completely uniform. This resulted primarily because of the large screen I decided on (see above post). Because of its large size, the pj has to be ~4.5 ft behind my head and ~2 ft above it, not as ideal as with my smaller screen. Also, because of the excellent light control in my room--and the excellent CR of the JVC pj--the HC characteristics of that screen were not important.

So I urge everyone to carefully consider all these features--their room, their pj, screen size, etc.--on deciding which screen works best for them.
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post #140 of 429 Old 07-23-2011, 05:57 PM
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Quote:
Originally Posted by AVWERKS View Post

2020
This won,t work with what you suggested. The PJ must be close to your head to benefit from the gain. It,s not a angular but a retro reflective surface meaning the light path is contained along the axis from PJ lens to screen and back to the lens, so your coconut needs to be close to this axis.
No more than an arms throw from that straight line axis.

Regards
David

Using FLyboys screen gain calculator the gain would be ~1.6 with a ceiling mounted setup.

With my setup the projector central calculator recommends a screen gain of 1.5

Would it be unwise to use the 2.4? Or should I settle for a higher gain angular reflective screen?

Thanks for the input
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post #141 of 429 Old 07-24-2011, 07:35 AM
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If you want to maximize the best qualities of the HP series then you must use it the way it's maker intended it to be used. There,s no bending of the rules when it comes to light and how micro beads of glass function. My experience with the high gain angular types is their not nearly as satisfying long term as the best setup conditions with the HP group.

Regards
David

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post #142 of 429 Old 07-26-2011, 09:02 PM
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I just figured out how to use the HP screen with my Mits HC4000 and have the projector mounted right above my head even though the projector has a large offset.........
....... well, modify my theater room (medium bedroom situated above the kitchen) by dropping the floor at the screen end to a lower level than were I am sitting just like in the movie theaters! Like this --


.............................../-----sit here
............................../
screen bottom here /


except the floor slope would have to be more gradual than shown above!
I really don't think the wifey would mind, do you?
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post #143 of 429 Old 07-29-2011, 07:40 PM
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Alright caved in...

Hi Power 2.4 cinema contour fixed 140" diagonal 16x9 ordered..,,

Thank you Benito J / AV store for outstanding customer service!
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post #144 of 429 Old 07-29-2011, 08:03 PM
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Quote:
Originally Posted by northern2020 View Post

Alright caved in...

Hi Power 2.4 cinema contour fixed 140" diagonal 16x9 ordered..,,

Thank you Benito J / AV store for outstanding customer service!

I predict you will be very pleased! This new HP2.4 material gives such a smooth artifact-free pic; I do believe it is even better than the older (2.8) material that I had (and enjoyed) for 4 yrs.
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post #145 of 429 Old 07-29-2011, 08:49 PM
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Yes!

It will be an improvement over the painted taupe wall that I currently use!
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post #146 of 429 Old 07-30-2011, 12:24 AM
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So where does one get the new HPHC screens? Is the pricing expected to be similar to the HP?
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post #147 of 429 Old 07-30-2011, 04:50 AM
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Quote:
Originally Posted by rsmash View Post

So where does one get the new HPHC screens? Is the pricing expected to be similar to the HP?

Call AVS and ask for quote. I would guess the price will be the same as an HP of the same size and model, after all it is just a gray version of the current HP fabric.

Doug

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post #148 of 429 Old 07-30-2011, 08:22 AM
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Quote:
Originally Posted by AVWERKS View Post

If you want to maximize the best qualities of the HP series then you must use it the way it's maker intended it to be used. There,s no bending of the rules when it comes to light and how micro beads of glass function. My experience with the high gain angular types is their not nearly as satisfying long term as the best setup conditions with the HP group.

Regards
David

If you have a room setup or can temporarily setup a projector in the appropriate spot, I'd try everything out first. I have my projector about 20 inches from the ceiling and my head is 3 feet below the projector. I'm using the original HP screen, and have a fantastic picture. Not only that, but if I stand with my head near the projector then move my head from there to where I normally sit, I can't tell much if any difference. I have a semi-light controlled room (screen comes down in front of sliding glass doors with blackout shades and windows opposite screen have blackout shades on them, but both sets of shades still let some light through on the sides).

Bob
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post #149 of 429 Old 07-30-2011, 09:36 AM
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Quote:
Originally Posted by ctviggen View Post

If you have a room setup or can temporarily setup a projector in the appropriate spot, I'd try everything out first. I have my projector about 20 inches from the ceiling and my head is 3 feet below the projector. I'm using the original HP screen, and have a fantastic picture. Not only that, but if I stand with my head near the projector then move my head from there to where I normally sit, I can't tell much if any difference. I have a semi-light controlled room (screen comes down in front of sliding glass doors with blackout shades and windows opposite screen have blackout shades on them, but both sets of shades still let some light through on the sides).

I would have to wonder if your screen material is really HP...The difference is very obvious to me and everyone who has been told to watch the screen as you stand up.. it gets darker (table mounted projector) screen is 2.8.
But, it is good you are happy with the image regardless!

Doug

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post #150 of 429 Old 07-30-2011, 10:09 AM
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As many have said, by all means email Dalite and ask them to send you samples of the HC and the White HP2.4 material. I was thinking about the HC version, but for my setup it showed significant drop off in brightness near the L and R sides, presumably due to its narrower viewing angle. So it would be wise to check this out for your intended screen size, etc.
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