Shermer Theater - Page 21 - AVS | Home Theater Discussions And Reviews
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post #601 of 615 Old 03-06-2015, 10:23 AM - Thread Starter
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Quote:
Originally Posted by Douce33 View Post
Spandex stretches quite a bit, (obviously you dont want to stretch it too much) but how large a screen do you want, 60" of height would give you a fairly large screen (122" diag. 16:9 screen without stretch, and 153" diag. 2.35:1 screen withouth stretch)
my screen is 150" 16:9 - it's probably 6.5' tall - I'm not willing to go that much smaller on my screen

are those 120" rolls not suitable for screens?
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post #602 of 615 Old 03-06-2015, 11:01 AM
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Quote:
Originally Posted by JRock3x8 View Post
my screen is 150" 16:9 - it's probably 6.5' tall - I'm not willing to go that much smaller on my screen

are those 120" rolls not suitable for screens?
Unfortunately I dont know enough about those materials to comment and I'd hate to give you the "go-ahead" only to have it not work out.
I'm sure if you post your questions in the thread that I linked to previously, you'll get some answers from people that have the appropriate knowledge.

Regards,

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post #603 of 615 Old 03-06-2015, 12:14 PM
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Shermer Theater

Quote:
Originally Posted by JRock3x8 View Post
my screen is 150" 16:9 - it's probably 6.5' tall - I'm not willing to go that much smaller on my screen



are those 120" rolls not suitable for screens?

From what I've read, the 120" wide spandex from SpandexWorld is only 2-way stretch. You need the 4-way stretch.

I've remember someone had found 120" 4-way stretch spandex from another site, but I never saw their results.

I'm sure the kind people over on the DIY screen forum could help you more.


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Last edited by ADAIR; 03-06-2015 at 12:19 PM.
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post #604 of 615 Old 03-06-2015, 12:36 PM
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Shermer Theater

Also this thread might answer some questions as to if 60" wide spandex will stretch enough.

60" wide Milliskin/Moleskin stretch to 74" for a 151" screen?


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post #605 of 615 Old 03-06-2015, 12:57 PM
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One guy over here tested spandex and his results seems to indicate that you don't want to stretch it any more than needed to stay straight. Stretching to fit a larger frame... No.
If you're aiming for acostically transparent if becomes no-no.

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post #606 of 615 Old 03-09-2015, 05:10 PM - Thread Starter
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got my PJ back today - wasn't the same one I gave them but it's fixed.

looks great - no dead pixel!
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post #607 of 615 Old 03-13-2015, 03:23 AM - Thread Starter
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I hesitate to mention this because I dont want to set unrealistic assumptions but when benq took my w1070 back to repair my dead pixel problem they replaced it with a different unit with a brand new bulb. So they probably ended up saving me a few bucks on six months of bulb use.

Needless to say I'm very happy but I did ask them and they said this is not standard practice.
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post #608 of 615 Old Today, 03:13 AM - Thread Starter
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Is there a best practice for positioning the center channel speaker if you don't have an AT screen? I have tried above and below and definitely prefer below but I don't really like looking at my speakers. Also I feel like some of the sound is being aimed at my shins and not at my ears.
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post #609 of 615 Old Today, 05:35 AM
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Quote:
Originally Posted by JRock3x8 View Post
Is there a best practice for positioning the center channel speaker if you don't have an AT screen? I have tried above and below and definitely prefer below but I don't really like looking at my speakers. Also I feel like some of the sound is being aimed at my shins and not at my ears.
I have mine below the screen but behind the false wall so I don't see it. Its slightly angled upward and sits on the stage which puts it about 11" from the floor.
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post #610 of 615 Old Today, 07:39 AM - Thread Starter
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I have mine below the screen but behind the false wall so I don't see it. Its slightly angled upward and sits on the stage which puts it about 11" from the floor.
for later reference for myself :

My First Build Ever

why do people always have recessed can lights in front of their screens? That never makes any sense to me.

also my projector doesn't do this but are there projectors that can push out different size images based on the input signal? So for example a 2.35:1 image would be the largest possible image and a 16:9 would be a smaller image inside that?
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post #611 of 615 Old Today, 07:50 AM
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Quote:
Originally Posted by JRock3x8 View Post
why do people always have recessed can lights in front of their screens?
From what i can tell its purely aesthetic. Brings folks attention to it. Its like the main attraction before a show when they have all the spotlights aimed at the stage.

Some builds might also use them to shine light on their speaker set up behind the screen again to add the wow factor.

I have found the lights to be a great help when doing stuff behind and around the screen though because I am not using pot lights in the ceiling.

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post #612 of 615 Old Today, 10:18 AM
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Quote:
Originally Posted by JRock3x8 View Post
Is there a best practice for positioning the center channel speaker if you don't have an AT screen? I have tried above and below and definitely prefer below but I don't really like looking at my speakers. Also I feel like some of the sound is being aimed at my shins and not at my ears.
Above AND below?

Myself, as I still don't have my AT screen, I have my center below angled up.

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post #613 of 615 Old Today, 10:39 AM - Thread Starter
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Originally Posted by Nightlord View Post
Above AND below?

not at same time

I definitely understand the draw of an AT screen now.
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post #614 of 615 Old Today, 03:32 PM
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Quote:
Originally Posted by JRock3x8 View Post
also my projector doesn't do this but are there projectors that can push out different size images based on the input signal? So for example a 2.35:1 image would be the largest possible image and a 16:9 would be a smaller image inside that?
The best you're going to do for this is to get a projector with zoom memory. If you set up your screen as 235 and then position the projector and adjust the zoom such that a 235 image fills the 235 screen, you can then zoom back to get a 16:9 image to be the same height. (assuming you set the projector at a position that allows both, and assuming you have a projector with adequate zoom range (at least 1.3x - though more is nice for a little placement flexibility) If the projector has memory, you just teach it each set of settings (zoom, V-pos, and zoom) for each type of image. Then you'll have to use the remote to manually select the correct image size setting for your content. (There are other more advanced ways to do it, but they require fancy automation and/or ripped content with metadata and more automation)

You might also be able to force the 16:9 image into an SD mode or something so that it only uses the center portion of the imaging chip, but I don't know about that and wouldn't recommend it even if you could, based on image quality.

The other way to do it is with a one-touch setting and macro for engaging the stretch or 4:3 mode on most projectors, which squeezes the image (distorting the geometry) and then engaging an anamorphic lens - usually on a motorized sled. This method has some advantages (though not all the advantages), but costs a lot more.

The Panasonic projectors have all had the required features for this for a few model years now, and you can get this with most of the last few model years of JVCs as well. I'm not sure where else. When looking at lower cost and used projectors, the most common limiting factor is the memory function itself, but don't overlook the zoom range: many of the budget DLP projectors do not have adequate zoom range to make this practical (at least that was what I found when I was doing the research three or so years ago.

Fred
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post #615 of 615 Old Today, 05:39 PM - Thread Starter
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So @HopefulFred I am going to take that as a no.
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