New High Contrast High Power Discussion Thread - Page 6

With a 100" screen, get the 1.1 HC screen. You do not need the gain of the HP screen at that size using an 8350.

I thought that I read that the 2.8 gain was still available.

No longer.

I had read that you could special order it. Is that not correct?

Nope, only available used if you can find one..

So, in reading Millerwill's multiple posts it seems like the further you site back from the HCHP, the less light drop off from the corners (no doubt due to the smaller angle involved with moving away, perpendicular, from the screen). My question is, what light percentage drop off is usually perceptible by most people. I know this is a general question, as there are people on AVS that claim to see a gnats ear at 100 feet. But I've read professional reviews that A-B'd pj's that had >20% light difference in side by side viewing and they state that it is hardly perceptible. My main question is, when using FLyboy's gain calculator, is .1-.2 gain dropoff acceptable when using from on access to the furthest viewing position (extreme edge of an 8 ft. long couch). I'm about 14 ft. away from my screen position, I was thinking a 106" but I want to know how if I should go smaller in order to decrease the unevenness in the corners of the screen. (and also whether to go with HCHP or re. HP fabric).

Thanks for any insight.

Call dalite and order samples.. Let you eyes tell you which is better for your environment

I'm not nearly as knowledgeable and experienced as most people in this game, so I think when I see something it has to be pretty blatant!

I think the reason that I saw this problem (brightness variation, esp darkening at the extremities of the screen) with the HC HP material is because I was going to a considerably larger screen, 144"W compared to my original 110"W (HP2.8 material) screen, and still sitting very close, ~ 12.5 ft, i.e., just over 1 SW. So I had to put my pj (RS20) further back behind my our 2 recliners: for the older, smaller screen the pj was only a ft or so behind our heads, but with the new larger one it was ~ 4 to 5 ft behind our heads (but still as low as possible for the pic to clear our heads). So the relevant angles for the retro-reflective character of the screen varied considerably more for various points on the screen than when it was much closer to our eyes (by being just behind our heads). So the much narrower viewing angle of the HC HP material reared its head.

BTW, I am incredibly pleased and impressed with the new HP 2.4 (non-HC version). The pic is so wonderfully smooth and precise, even more so than the older 2.8 HP, which was already outstanding in the regard.

While at CEDIA the last few days, just for the fun of it I walked by the Dalite booth to tell them how much I liked my new screen, and they said the the new HP2.4 material had borrowed aspects of their JPK Affinity screen, the super smooth material that Joe Kane helped developed esp for high res HD projectors.

The morale is that it really pays to get samples from Dalite to check all this out for your own specific situation!

Hey guys,
I'm planning to convert a living room into a HT room. I've got decent lighting control (screen will drop down over only window in the room) carpet is light brown, walls are brown but ceiling is white. I'll be sitting about 14' from a 110" diagonal and will probably be purchasing one of this fall's crop of pjs (RS45, Epson 5010, Pany 7K or similar) and mounting it in a closet 1 ft. above and behind my couch. While I think the HCHP would help with the white ceiling's light scatter, I'm a little worried about the dark corners cause by the gain rolloff. It seems that Millerwill proved that a smaller ratio of screen size to seating distance minimizes this...does anyone have a setup where this is not noticeable (and what size is screen and seating distance?).

Thanks,
Cory

The problem with samples, especially with a screen that you're worried about droppoff of brightness in the corners, is that screen samples don't really cut it. Even if you ordered samples for the center and corner, it wouldn't really tell you how gradual the droppoff was.

I don't think many folks here bought this screen, the samples are very non impressive compared to the standard HP. I do not recall seeing a member post a review of this product after buying it. It has only been on the market since this threads inception.

If you guys can wait.. I can give you the impression of HCHP.

My screen will be 158" 16:9 screen.

My projector will be Infocus 8604 1700 lumen.

Samples are certainly not perfect, but can still be very helpful. E.g., it was clear to me that the HC version of the 2.4HP material was significantly darker at the extreme edges of the screen, compared to the center region, while the regular HP2.4 material was much more uniform.

This is probably because I have a very large screen (144" W) and sit quite close, so this issue with the HC version may not be a problem for many situations. But I would advise trying things as best you can with the samples.

I had an opportunity to compare HPHC with Black Diamond side by side. The most noticeable difference: HPHC did not display any color shift and the Black Diamond did. I didn't think I would care for HPHC, but I have to say, it's mighty impressive and deserves to be on the short list of possible materials for ambient lit living rooms and family rooms and/or light-challenged projectors. The fact that it has a structured backing and is not a vinyl-based screen makes it possible to forgo the added expense and poor aesthetics of tab tensioning in retractable deployments.

How do I find the product number for these screens? I'm looking for a 92" Model C with the HPHC material.

I'm not sure what you mean by model C. I think it depends on the frame or the case type + the material and size. You can go on their website and tell them what you have in mind and they can give you the part number.

it would be great if we all could have every major screen type set up in our room and easily return any ones which we didn't want.

On the dalite website, you click product, manual wall screen, model C, and on the right you will see a list of pdf, including one call "part numbers and pricing". Prices are list and normally a bit more than you pay if you order though AVS. AH.. they have not updated the file .. give them another 9 months or so.. they don't really jump right on documentation...

I noticed that too. From what I have heard you can use the part number for the High Power version, but add a C to the end for Custom, then have the customization be to get the high contrast high power. For instance, order 11111C instead of 11111. Other things like a black case or extra drop may cause a C also.

--Darin

Glad I found this thread I have been looking at the 2.4 Hi Power 133" Cinema Contour. Any word on waves ever appearing on this screen? Is it tensioned or whatever? I want something that will be good for 3D with my new panny so I want something with some decent gain but have heard that since the lumen output on the panny 7000 is pretty strong in a light controlled room that the video is borderline too bright when just doing regular 2d even in eco mode on a high gain screen.. Thoughts?

my setup is panny 7000 throwing @ 18'
completely light controlled room
dark red/crimson carpet and walls

There is no question of waves on the Cinema Contour, or other fixed frame screens.

I am looking for fixed since it saves me on space.. so I guess waves are usually only with pulldown or motorized screens? thats good to know

Have you tested your sample?

High Power High Contrast has a structured backing (fiberglass), so it maintains its shape -- does not require tab tensioning as would a more stretchy vinyl material.

I just purchased a HCHP 120" pulldown and should have it next week. I will
compare it to my HP 2.4 in a light controlled room. The projector is an JVC
RS-2 which I know run on low lamp mode and projector is centered to the
screen. All my seating is straight on with none outside the screen width.

Would be nice if this screen gives me better blacks and
a better picture with the lights on. Big HP screen fan so will be
fun to compare. The loser will be my outdoor screen

Looking forward to your review. The sample did not impress..

Sample looked good enough to give it a try. Even though seems to small to make an honest evaluation. Will let you know how it turns out.