JVC DLA-HD250 new entry level DILA - Page 17

Any comments on the 12v trigger? (Last page)

Ok, yes, thank you Claus... much appreciated.
I know now that my existing setup will work by just taking out my old pj and dropping in the JVC.

My current screen is actually a 'painted on wall' variety that looks very good with the current setup.
However I'm hoping that with the step-up to a much better display, I should also step-up to some nice screen material, but just not sure what to get that will look best for my setup without breaking the bank on price.

So, if say screen height is X and vertical shift is 80%, that would mean the highest position of the lens center is 0.8*X above the screen centerline, i.e 0.3*X above the top of the screen. Correct?

I always get confused by this, but I think this is how it works Take a 90 high screen. Divide by 2 giving you 45 inches. Multiply the 80% by 90 inches giving you 72 inches.
Take the 72 and subtract the 45 giving you 27 inches. 27 inches is the amount the projector can be above the top of the screen

Or you can just take the screen height x 30%.

Actually with the JVC's it's a little different. Supposedly ansi contrast improves with lens shift (maybe on/off too?). Also, some people have got some 'ghosting' of images in dark scenes (like white credits on a black background), which goes away when more extreme lens shift is used.

Downside of extreme lens shift can be less lumens and perhaps a little less sharpness.

Though with a HD250 at the top of your screen, you're already using a good 70-80% of it's lens shift anyway.

Claus:
If I remember correctly you have a MITS rated about 18db that you are happy with. Have you had any listening experience of how much noisier the JVC HD250 (old RS10) is at the same lumens? Art's review of the 19db specification for the RS10 seemed to suggest it was not as quiet as the 19db rating would suggest since at that time 18db was as quiet as you could get, but the review implied the JVC was not essentially the same as the quietest projectors available. The RS40 has a higher audible noise rating - is this just because of the 3D requirement? Do you know if a 2D setting for the lamp could make it back to 19db?

No it is because of the increased cooling necessary for the higher output lamp.

Upwords lateral. You would get quitter unit, brighter, potentially higher contrast, sharper, fully motorized lens, better uniformity....but, none of these are giant steps over the RS1....so while it is better, how much depends on your level of expectation.

They are on national backorder...not to say a place doesn't still have them in stock...JVC doesn't. A real screen will make a world of difference over a gray painted screen.

PC is pretty much useless. Why? Well though they often are accurate, the are sometimes not. This makes trusting the accuracy of the site a gamble. As I always tell people....check the manufacturers site to be sure.

No. Ut you also really want to avoid using horizontal shift if possible...small fine tuning is fine.

Was this comment referring the move from an RS1 to HD250 or the RS40?
(since he mentioned both models)

Sorry...to HD250. The RS40 is a straight upwards jump for sure.

Thanks Jason:
Can you comment on the audible noise difference between the MITs that Claus has and either the HD250 or RS40?

Thanks.

Do you know if the HD250 has the courser focus adjustments of the RS10/HC350, or the finer adjustments of the RS20 and up?

I had a chance to fire up my hd-250 this evening. I wanted to check there was no handshake or cable issues with my switch and 45ft HDMI cable to my processor before i ran it in the wall. Right out of the box I was impressed. It took like 5 min of adjustments to get a 100" pic from just sitting on my coffee table. we Q'd up avatar for a looksy and ended up watching it for like a half an hour. Sharpness was pretty good. On par with my 61" D-ILA rear projection TV...lol

unclemat -- Lens shift question => The lens shifts are specified as plus/minus 80%, vertical, & 34%, horizontal. These are from the screen center. Therefore you are dealing with half screen dimensions (as others have stated somewhat differently). For my 106" screen, it's 92" wide and 52" high. That means that I could place the HD250 anywhere between 0.8 x 52 = 41.6" above screen center to 41.6" below screen center (provided I used zero horizontal shift). The horizontal lens shift works the same way, but you use the screen width instead.

Since the amount of horizontal lens shift used subtracts from the amount of vertical lens shift available, the use of any significant horizontal lens shift is discouraged. As Daniel (I believe) stated, your HD250 (or any other PJ ) should be mounted so that the center of the lens is at about the horizontal center of your screen. That way, only very small amount of horizontal lens shift will be needed to "tweak" the horizontal alignment. this leaves the majority of vertical lens shift available for use (that's what is really needed for most installations, anyway).

CFR -- My Mitsubishi HC5500 is rated "below 19dB" in the low lamp mode with it's measly 160W lamp (about 22dB in the high lamp mode, which I don't use). The HD250 (from the JVC site) states that the HD250 is rated at 19dB with it's 200W lamp. My PJ is on a shelf behind my left shoulder. The exhaust vent is about 18" from my left ear, and I don't hear it, since it is right at my room's noise floor. Accordingly, I don't think the JVC PJs (even the 220W RS40 & up) would be much more audible. Anything in the 19 to 21dB rating should be great (especially if your PJ is further from your head than mine is). Normal room noise floor is typically rated at 20dB (for a quiet room).

I lived with my old DLP PJ and it's 26dB fan noise, even though it was mounted in the same location. But that one was definitely noticeable (by me) if the audio was on the quiet side (especially if the movie story line didn't "pull me in" -- just about any action-adventure flick, especially science-fiction).

If your, proposed, HD250 were further away from your ears (than mine), it should also be totally unnoticeable. That's one of the advantages of a larger, physical, PJ -- they are usually quieter. They are certainly a whole lot quieter than any of the Epson PJs.

Yes I have the HC5500 and I'm still enjoying it (2670 hours on the 5000 hour rated lamp - low lamp mode). That's why I'm holding off on any upgrades for 2011 (even though it's very difficult to suppress the urge). That way, as I said in the "Over $3K" forum JVC thread, that I will (can likely) afford to get the 2012 model replacement for the RS40 (or possibly even the RS50 -- ).

Warehouse was in nj that he ordered from. maybe it will help u find some. I'm torn between the carada and the Stewart studiotek 130! Carada is 1000 with a real world gain of 1-1.1. The Stewart is more than I paid for the projector. I'm projecting a 139" screen at 14ft 4in away. Myroom is totally light controlled I'm painting ceiling black tonight! I guess I'd like to keep the extra 1600 in the bank if possible! However I made a mistake buying epson 8100 and ended upgrading in less than a week.

I have owned the Carada CCW and BW and am also on my 2nd Stewart screen (both of which used the ST130G3 material)........The Stewart screens are worth the extra money to me. There were a few things I did not like about the Carada screens.

Having said that, most people LOVE Carada and the customer service is 2nd to none! The few little issues I found with Carada I have never read about anywhere, so I am obviously in the EXTREME minority. My advice in your situation is buy the Carada and if you by chance find something you dont like (highly unlikely), you can return it.

Carada's are quite good....good bang for the buck. Stewart's are the best, but you pay a premium for them for sure.

I plan on going with a Carada BW 126" Diagonal screen at 16' in a mostly light controlled room. My original thought was the HP screen, but could not get it to work for my living room. I will get the screen first in about a month and then around March upgrade to either a HD250, RS40 (need to check to see what the cost difference is with AVS-not concerned about 3D, but may need the additional lumens) and the Mits HC6800. I currently have a Mits HC6000 and it has been mostly trouble free except for a lamp lighting issue from day one. This is making the Mits HC6800 at the bottom of my list.

HP is great for some, but not all. The BW is quite decent and David takes good care of his customers.

What's going to happen with pricing on the RS40 come March is hard to say...

Ditto. Watched "Replacement Killers" and "Fifth Element" last night. It's remarkable that you can get this good of a picture out of a projector now, and at this price...

This level of performance has been out for a while, what is pretty revolutionary is the pricepoint that one can achieve it for.

i can probably convince my wife to spring up to the rs40 from the hd250... should i?
is it really worth waiting another month for it? i'm so conflicted. haha

Wonder if Jason can give a little more detail(lol) on the sharpness difference between the HD250 and RS40?

And, there's suppose to be an ansi contrast difference too? Any numbers?

the hd250 has 25,000 and the rs40 has 50,000 contrast ratio. with 1000 lumens on the hd250 vs. 1300 on the rs40... i'm coming from a panasonic ax100 so i'm sure any 1080p projector will be leaps and bounds ahead of that.

i'm so excited! i just confirmed my pre order for the rs40 with bobbi from av science. great lady to work with by the way. very accommodating, and the pre order price is well worth it if you are already spending that kind of cash on an hd250. i figure i've waited a really long time for our theater to be finished, another month won't kill me.

it will be my christmas gift this year... hehe

Seriously I would. The HD250 is real nice, but the RS40 will be a real improvement. At this point, the price isnt that different. In the long run, the price difference wont make a difference