I live in an apartment and I'm researching the addition of a PJ setup directly in front of my current plasma. For now I want to be able to use the plasma also, I don't want to deal with a frame that I need to R&R every time I switch. The price point for a retractable, tension-based, AT screen I can simply hang from the ceiling is a bit more than I want to fork over. Based upon some other threads I've read & started, people are recommending I use the spandex solution.
What I was considering was a solution like the photo below using clamps & bungee cords, except buy the correct combination of Milliskin.I've never sewn a thing in my life, so adding grommets to the Milliskin is out of my league.
The AT screen will be centered in front my current front speakers, blocking the complete width between the outer edges of the main speakers as well as the center speaker.
The tentative parts list is below:
BenQ W1070 Projector (BHPhotoVideo)
Right angle HDMI connector (Monoprice 4859)
Right angle 15' power cable 14AWG (MonoPrice 7686)
HDMI cable, 22AWG silver 50' (Monoprice 2678)
Milliskin Black Matte (SpandexWorld 796), 3 yards on a roll
Milliskin White Matte (SpandexWorld 795), 3 yards on a roll
HDMI splitter (Monoprice 7522)
Cable Mgmt Kit (Monoprice 8288)
Home Depot Easy Clip Tarp Anchor (5-pk, PN 89521-5) x2
Anchor eye bolts
The room dimensions are 13'Wx8'Hx15'D. The throw distance would be approximately 10-11', and I can line up the projector on the ceiling or at the top of the back wall directly centered with the screen. The viewing distance with the plasma is 76", with the projector the max would probably be around 115". I don't know at this point what the best image size will be based upon the other restrictions. The front wall is a flat brick/barn red, and the other walls in this room are painted a flat tan/beige.
To the right of the screen there is a glass patio door, but I have vertical blinds & curtains to block that off... with all the other doors closed the only outdoor ambient light coming in is a crack at the bottom of the patio door curtains, and a glow around the other three edges.
I think my remaining questions lie in validating what combination of spandex to use. If I use a single white sheet, the light could reflect off the plasma screen, so I know I need to use something dark between the plasma & white spandex. But I also don't want to leave anything on the table per see with regard to optimal performance within the restrictions I already have. Would there be a benefit to using 2 white sheets in front of the black, or will it not be needed with the W1070 PJ? Are there any infrared remote control problems going through the spandex?
Using the 0.7 gain listed for the white over black spandex, and the 2000lumens on the PJ, my calculator says the screen brightness would be near 50fL, and I've read that if it's too bright it can introduce the rainbow effect on DLP's. I don't yet know if I will experience the rainbow effect and if I do I may return it for perhaps an Epson 3500... I know that's not a short throw projector and the image will be smaller though. Would the spandex selection change if I switched to the 3500?
Am I on the right track? Any other ideas which might make this even simpler?