110" DIY Spandex AT Screen - Page 23 - AVS Forum
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post #661 of 672 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 672 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 672 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 672 Old 08-20-2014, 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 672 Old 08-20-2014, 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 672 Old 08-20-2014, 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 672 Old 08-20-2014, 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 672 Old Yesterday, 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; Yesterday at 01:30 PM.
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post #669 of 672 Old Today, 12:57 AM
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Quote:
Originally Posted by jlpowell84 View Post
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
Quote:
Originally Posted by MississippiMan View Post
First off, BOC might let some fair degree of sound pass, but nothing that would be construed as being accurate.

I would lose that idea.

...

Click on post for rest that doesn't apply to you.
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post #670 of 672 Old Today, 05:57 AM
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Quote:
Originally Posted by jlpowell84 View Post
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...
Where did you get that info? The w1070 has Digital Vertical Keystone, but that means you can Tilt it Up & Down....not twist it of to one Side.

If you cannot mount the PJ's lens directly in the center of the Screen, the Epson 8350 is your only choice at the $1000.00 price point.

Quote:
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
I thought I answered this post last night via my Phone. Weird.

If your not going to go AT, then a much better solution to BOC is Flexi-White.
FlexiWhite Projector Screen Material

Better surface, higher gain, easier to mount (stretches) and accepts paint better than does BOC

To quote James T. Kirk;
"I'm laughing at the superior intellect"
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post #671 of 672 Old Today, 09:15 AM
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Well I attached the screen material to the frame and did a quick mounting. Any worries about light bleed through and reflections off of items behind the screen are gone. I can stand behind the frame and see the movie, it is quite bright. I will most likely cover the rear area with dark cloth to just limit extra light. I prefer my theater experience very dark. I did some quick testing and do not see any shadows coming through the screen. The center posts are recessed 1/4 inch back and painted flat black and I do not see any reflections back to the screen. I did not attach the outside trim yet. I just wanted to see if I needed to tweak the fabric, and to my eyes it looks great.

I am running a BenQ W1070 in Cinema Mode with the lamp on Eco setting, and am very happy with the brightness, color and detail. $54 in spandex and I am thrilled. Screen is Milliskin Matte (White) over Milliskin Matte (Light Silver) 122" diagonal. Each step of the way this project exceeds my expectations. I cannot believe I actually took the plunge and started it.

This is a work in progress. So ignore the white walls and myriad of other distracting items around. It is a completely unfinished basement. Add to that a conglomeration of speakers that would make any audiophile's head explode, but to me they sound fine. As time and money are more available, I will get to the speakers. I will get to the ceiling and walls and all the other parts that add up to a nice theater. But for now, I can sit on the old couch and be happy with my setup. I will start a proper thread of my build at some point as I make further progress.
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post #672 of 672 Old Today, 09:35 AM
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Quote:
Originally Posted by MississippiMan View Post
Where did you get that info? The w1070 has Digital Vertical Keystone, but that means you can Tilt it Up & Down....not twist it of to one Side.

If you cannot mount the PJ's lens directly in the center of the Screen, the Epson 8350 is your only choice at the $1000.00 price point.



I thought I answered this post last night via my Phone. Weird.

If your not going to go AT, then a much better solution to BOC is Flexi-White.
FlexiWhite Projector Screen Material

Better surface, higher gain, easier to mount (stretches) and accepts paint better than does BOC
Ok I will just use two low profile speaker stands and attach a board on top for the PJ to peek over the back of the couch. I do have the option of mounting it to a light fixture further back in the future to keep the room clear... I am ordering the Flewi-white.
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