That's good info to know. I'll definitely try picking some up this weekend to test with. If I had back lights behind my screen (using a fake screen wall), does the spandex allow light through the other way. To see the speakers? Or should I try building GOM panels (currently using the FR701) and have those behind the screen that can be removed if needed. That could be my backing, would be AT, just not sure if it's solid enough to block the lights that much?
Thanks guys for your help.