HIGH POWER a Review! Part 1 - Page 130 - AVS Forum | Home Theater Discussions And Reviews
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post #3871 of 3892 Old 09-12-2018, 06:54 AM
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Quote:
Originally Posted by joel dickman View Post
Moral of the story: if you are lucky enough to own a High Power screen, hang on to it tightly.

...i.e. provided your front projector is table-mounted or sits on a shelf close to eye-level. As the distance between eye-level and projector lens increases the advantage of the retro-reflective High Power 2.8 gradually dimishes.


As I'm looking for a used HP 2.8 screen here in Europe larger than the one of my Da-Lite Slimline Electrol HP 2.8 (image width limited to 1.78 m / 70 inches) for my 3D table projection, I can only hope that some owners that (erroneously) use it along with a ceiling-mounted projector might want to part with it.


(As a matter of fact I know that several dealers in Europe sold High Power 2.8 screens in the 1990's because of a better profit margin to unsuspecting ceiling-mounting customers...)

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post #3872 of 3892 Old 09-20-2018, 10:37 AM
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2.8 screen posted for sale:

https://www.avsforum.com/forum/252-f...ltra-rare.html
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post #3873 of 3892 Old 09-21-2018, 01:57 AM
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Qapla'! I hope the new owner is going to be a High Power 2.8 connoisseur who wants to upgrade - and will then part with his smaller HP 2.8 screen...

"It is only about things that do not interest one that one can give a really unbiased opinion, which is no doubt the reason why an unbiased opinion is always absolutely valueless." Oscar Wilde
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post #3874 of 3892 Old 09-27-2018, 05:31 AM
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Went through my product archive yesterday and noticed that the High Power 2.8 was already in the 1993 (!) Da-Lite product catalogue.


I'm enclosing the product overview page from the 1996 catalogue, notice the "High Power" logo which I'm certain many owners agree with.
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post #3875 of 3892 Old 10-15-2018, 07:17 AM
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Originally Posted by Samuel1122 View Post
The truth of front projection is that surrounding light should be controlled, the more you can do this, the better the picture, sadly, a pitch dark condition is not generally the best to hang out in, except if obviously you adore caverns...

...and the High Power 2.8 was just optimal for lit rooms because of its retro-reflective properties.

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post #3876 of 3892 Old 10-15-2018, 07:55 AM
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Originally Posted by Frank714 View Post
...and the High Power 2.8 was just optimal for lit rooms because of its retro-reflective properties.

The HP is a great screen, but let's not go off the deep end.

I find it totally unusable in a daylit room; when there is reflected light from all directions the screen excels at capturing that coming from your general direction and return it to your eyes.

Noah
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post #3877 of 3892 Old 10-17-2018, 08:30 PM
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Originally Posted by noah katz View Post
The HP is a great screen, but let's not go off the deep end.
I don't know, my HP feeds our dog when we are away for the weekend, and it washed my car once.
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post #3878 of 3892 Old 06-17-2019, 08:36 AM
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I've got a hi-gain Model C I used with my Panny AE-200U (700 lumens) waaay back in the day. I'm setting up my "HT living room" again with an Epson 5040, I might need sunglasses!

I see dead pixels.......
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post #3879 of 3892 Old 06-17-2019, 02:13 PM
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Originally Posted by Kriilin View Post
I've got a hi-gain Model C I used with my Panny AE-200U (700 lumens) waaay back in the day. I'm setting up my "HT living room" again with an Epson 5040, I might need sunglasses!
Probably not, since the 5040 is not that bright in a movie watching cinema mode in low lamp.
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post #3880 of 3892 Old 10-12-2019, 07:24 AM
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Just to echo what many have said already - it's such a damn shame you can't buy these anymore! We could have large, uber bright HDR with no sheen/sparkles on low power bulb settings. And they were cheap! I'd gladly pay high end screen prices for a large high power.
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post #3881 of 3892 Old 10-12-2019, 07:56 AM
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Originally Posted by howiee View Post
Just to echo what many have said already - it's such a damn shame you can't buy these anymore! We could have large, uber bright HDR with no sheen/sparkles on low power bulb settings. And they were cheap! I'd gladly pay high end screen prices for a large high power.


They did have weird single super bright “ sparkles “ at times. That used to bug me. And a lot of light fall off when off center. I liked the one I had, but it was not perfect.


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post #3882 of 3892 Old 10-12-2019, 08:58 AM
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Quote:
Originally Posted by noah katz View Post
The HP is a great screen, but let's not go off the deep end.

I find it totally unusable in a daylit room; when there is reflected light from all directions the screen excels at capturing that coming from your general direction and return it to your eyes.
All ALR screens have tradeoffs that allow them to perform at their best under specific conditions and HP was no different. It was very good at doing what it was intended to do -- reflect projector image light back at the projector and ambient light back at its source. The optimum setup with HP was to sit as close to the projector as possible and have as little ambient light as possible coming from the general direction of the projector and viewers sitting next to the projector.

With projectors being much brighter today than when HP was introduced a modern incarnation of HP would be designed differently. A dark substrate could reduce the original 2.8 gain down to 1.0 while providing superior ambient light performance, and smaller glass beads would be required for 4K resolution. Given the low cost of original HP and the high cost of current quality ALR screens there would be plenty of room to allow for improved production controls that would raise cost.

Still, a modern HP would be a niche product just like all other ALR screen iterations. It would only really suit a setup with a couple of people sitting on either side of a table mounted projector. The high volume Da-Lite enjoyed when glass bead screens were popular to compensate for dim projectors is gone and low volume products result in much higher cost per item. It would likely take a high quality, low cost supplier in China to roll the dice on producing such a screen and then trying to attract screen marketers to buy in.
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post #3883 of 3892 Old 10-12-2019, 01:03 PM
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Quote:
Originally Posted by Craig Peer View Post
They did have weird single super bright “ sparkles “ at times. That used to bug me. And a lot of light fall off when off center. I liked the one I had, but it was not perfect.


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Those were Clingons.. a rogue micro bead that was not properly embedded. After several cleanings they are completely eliminated.. And yes, only good for a 2 seater room, but man I would never give it up!
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post #3884 of 3892 Old 10-12-2019, 01:49 PM
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Those were Clingons.. a rogue micro bead that was not properly embedded. After several cleanings they are completely eliminated.. And yes, only good for a 2 seater room, but man I would never give it up!
At this point I have a 6 - 8 seater room - one row across, so the Stewart StudioTek 130 screen works much better in my theater.

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post #3885 of 3892 Old 10-12-2019, 08:42 PM
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I am sure it would.. as has been said.. niche market 2-3 seater.. just held a piece of computer paper up in front of my HP screen and asked the wife how she liked it.. her response was Dark, why would you want that? :-) I told her if anything happens to this screen that is what you have to look forward to! Good thing I have a backup 110" and 103" HP 2.8 ;-)
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post #3886 of 3892 Old 10-13-2019, 08:12 AM
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Originally Posted by airscapes View Post
I am sure it would.. as has been said.. niche market 2-3 seater.. just held a piece of computer paper up in front of my HP screen and asked the wife how she liked it.. her response was Dark, why would you want that? :-) I told her if anything happens to this screen that is what you have to look forward to! Good thing I have a backup 110" and 103" HP 2.8 ;-)
Of course it's always important to consider that a projector, screen and viewing environment represent a system where all components need to be matched for optimum performance. Changing one element often requires changing other elements. You appear to have a perfect match with your older, dimmer projector and higher gain HP screen. Maybe by the time your HP degrades with age you'll be ready for a newer, brighter projector that better matches a newer, lower gain screen.
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post #3887 of 3892 Old 10-13-2019, 08:16 AM
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It's a bit ironic that a screen that works so well with HDR was designed years ago. I think it would sell very well today because it makes projected HDR possible without any special tone mapping.

Last edited by Danonano; 10-13-2019 at 10:48 AM.
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post #3888 of 3892 Old 10-13-2019, 10:41 AM
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Originally Posted by airscapes View Post
I am sure it would.. as has been said.. niche market 2-3 seater.. just held a piece of computer paper up in front of my HP screen and asked the wife how she liked it.. her response was Dark, why would you want that? :-) I told her if anything happens to this screen that is what you have to look forward to! Good thing I have a backup 110" and 103" HP 2.8 ;-)
Based on how the human visual system works, it is not really a valid test to compare screens side by side like this. You need to compare them sequentially with enough time to adjust in between.

I have an HP 2.8 and ST 100. I would not go back to the HP 2.8. The ST100 is way more transparent.
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post #3889 of 3892 Old 10-13-2019, 11:57 AM
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B
I have an HP 2.8 and ST 100. I would not go back to the HP 2.8. The ST100 is way more transparent.
I think it was luck of the draw.. none of my HP screens have had the paisley artifacts that some have talked about .. very much invisible even with a 100% full field.. If you ever have seen the slop they call HD content from Verizon, screen texture/artifacts is the least of ones worries.. :-)

Lets face it, the HP had it's market, anyone still needing what it provides has to find what they need used, and eventually there will be no more.. Just like the Beta Hifi and Floppy disk.. it will fade into tech history.. been almost 10 years since the sold that last of them..

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post #3890 of 3892 Old 10-14-2019, 07:00 AM
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They did have weird single super bright “ sparkles “ at times. That used to bug me. And a lot of light fall off when off center. I liked the one I had, but it was not perfect
True. I used to go up to the screen and try and wipe them off with my finger, which on reflection wasn't a great idea and probabaly did nothing other than make it a bit greasy! They were super infrequent, though, and a compromise i'd be happy with. 200"+ screens (did they make them this big?!) with over 30 ftl would have been totally achievable.

Last edited by howiee; 10-14-2019 at 07:04 AM.
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post #3891 of 3892 Old 10-14-2019, 09:50 AM
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True. I used to go up to the screen and try and wipe them off with my finger, which on reflection wasn't a great idea and probabaly did nothing other than make it a bit greasy! They were super infrequent, though, and a compromise i'd be happy with. 200"+ screens (did they make them this big?!) with over 30 ftl would have been totally achievable.
The max height was 72" without a seam.
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post #3892 of 3892 Old 10-14-2019, 10:24 AM
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Would anyone happen to know what screen the JVC NX9 was showing on at this years CEDIA? I recently upgraded my projector to the NX9 and I'm not particularly fond of the image in bright scenes (some sparkling) on my 133" Dalite Cinema Contour screen.

That and once the brightness was bumped up, I noticed I had a couple of small marks in the top left of the screen.

Whatever screen they were using for the NX9 seemed to be a perfect match.

Thanks
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