110" DIY Spandex AT Screen - Page 23 - AVS Forum
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post #661 of 669 Old 08-19-2014, 04:29 PM
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Quote:
Originally Posted by ahajr143 View Post
You should be fine as long as there are no light sources behind the screen such as power led(s)
What he said.....

David could not have read the stated fact that you have at / over 3' distance from the rear of the Screen and any reflective surfaces.

At a distance of 3' to 4', and with the very slight degree of bleed through that 2 layers of Spandex allows, there would be no chance that there would be enough light reflected off the rear wall to in any way effect the Screen's performance...

3".....yes. Perhaps. 3' or 4' ? Not even. Even if the room is in total darkness, and the area behind the screen is in any way sealed around the perimeter of the Screen, the degree of light passed would barely even produce any more illumination than a visible image if viewed from the rear.

To quote James T. Kirk;
"I'm laughing at the superior intellect"
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post #662 of 669 Old 08-19-2014, 05:45 PM
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Two layers of white spandex, no stretch, shining on a surface four feet away in an otherwise blackened room (flat black paint, black rug and black velvet on the ceiling). Will the reflected light illuminate black areas of the image?
My experience says yes, but sometimes I also catch glimpses of unicorns out of the corner of my eye, so who knows.
...and thus concludes my input on the spandex thread. Have fun gentlemen. It is a great cheap diy screen option.


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post #663 of 669 Old 08-19-2014, 07:57 PM
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So following along with the recent discussions of reflective issues behind the spandex material. I plan on putting my JTR Triple 8 LP behind the screen. I was also planning on putting it quite close. My back wall has a big piece of black fabric tacked on the wall so it seems that is good. Just wondering if the speaker or speaker outline will be seen. I would say I plan on having the screen 5-6 inches off the wall. I have a window behind the black fabric that I will use to recess the Center a little bit. It is 7.5 inches thick. Just not sure if it will cause an issue.
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post #664 of 669 Old Yesterday, 07:16 AM
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Davidk442,

Some people always like to say their piece then say "goodbye" to avoid. a rebuttal.

Well I'm sorry, but your own photo gives your comments no credibility. The area of the wall directly behind the Spandex shows NO image whatsoever. Without any light being cast onto the rear wall, there will be NO light returned to the spandex screen. Even the ceiling directly above the spandex shows virtually no illumination.

I don't blame you from wanting to recede from the discussion....although it is neither warranted or desired. What remains confusing to a extent is how you would construe your example as being a valid representation of your point?

It is however a sterling example of my own.

To quote James T. Kirk;
"I'm laughing at the superior intellect"
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post #665 of 669 Old Yesterday, 07:21 AM
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Quote:
Originally Posted by jlpowell84 View Post
So following along with the recent discussions of reflective issues behind the spandex material. I plan on putting my JTR Triple 8 LP behind the screen. I was also planning on putting it quite close. My back wall has a big piece of black fabric tacked on the wall so it seems that is good. Just wondering if the speaker or speaker outline will be seen. I would say I plan on having the screen 5-6 inches off the wall. I have a window behind the black fabric that I will use to recess the Center a little bit. It is 7.5 inches thick. Just not sure if it will cause an issue.
What dual layer spandex application are you considering?

White / White? White / Silver? White / Black?

If your back wall is removed from the rear by at least 7" and Black, and the Speaker itself has a dark Grill w/no reflective Metal Trim, even if placed at 1" - 3" (suggested distance) you should have no issues at all.

What PJ are you using? Screen size?

If you want to be absolutely certain...opt for White over Black.

To quote James T. Kirk;
"I'm laughing at the superior intellect"
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post #666 of 669 Old Yesterday, 08:03 AM
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So white over black will, although reduce gain, prevent light bleed through the material

I ask because I will not be able to have he area behind my AT screen painted black
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post #667 of 669 Old Yesterday, 01:01 PM
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Quote:
Originally Posted by MississippiMan View Post
What dual layer spandex application are you considering?

White / White? White / Silver? White / Black?

If your back wall is removed from the rear by at least 7" and Black, and the Speaker itself has a dark Grill w/no reflective Metal Trim, even if placed at 1" - 3" (suggested distance) you should have no issues at all.

What PJ are you using? Screen size?

If you want to be absolutely certain...opt for White over Black.
Ok, the last 12hrs have me thinking. I was originally going to wait it out and save for a Sony 55ES. Build a frame to "receive" and "hold" my screen frame and go AT with my center behind it. But I have recently thought I could buy a cheaper PJ for now then use it elsewhere or sell it when I am ready to upgrade to a "long haul" high quality PJ. So leave my CC where it is and put a spandex screen on the wall all for an immediate PJ transition.
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post #668 of 669 Old Today, 12:47 PM
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Quote:
Originally Posted by jlpowell84 View Post
Ok, the last 12hrs have me thinking. I was originally going to wait it out and save for a Sony 55ES. Build a frame to "receive" and "hold" my screen frame and go AT with my center behind it. But I have recently thought I could buy a cheaper PJ for now then use it elsewhere or sell it when I am ready to upgrade to a "long haul" high quality PJ. So leave my CC where it is and put a spandex screen on the wall all for an immediate PJ transition.
Ok I have ordered a Ben Q 1070 from Amazon. Cheap and it has 307 out of 388 reviews as five stars which is pretty good. If I don't like it or it doesn't pass the "headache" test being DLP technology then I will send it back and be out the 7.99 one day shipping Other DLP options and if headaches are an issue then Epson has the 2030 and 8350 for under 1k. I do like that the Ben Q 1070 doesn't have to be mounted directly straight horizontally...

So I know this is a spandex build thread but are there any comparable materials? I have done less than 5 minutes research on other DIY materials. Saw some people use blackout cloth and other dedicated screen material that looks like it cost a bit more than spandex. Not making a case for anything and most likely spandex will be the winner as I would like to move my center channel up behind it in the future. But for now I will just put it on the wall over the black material I have there now. Have a couple daylight gaps in my Roxul AFB stuffed in the window frame behind the black material to fill. So I guess I will be ordering some mass quantities of spandex

just curious how something like this compares?
http://www.amazon.com/Carls-Blackout...TJPY7B3AWPEFCY

Last edited by jlpowell84; Today at 01:30 PM.
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