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Re: Screen question
And I always drag out my old screen experience. Mine is a loose layer of black "terry" behind the frame, and a taunt layer of gray 100% cotton, stretched over a frame of PVC and iron pipe. (Iron on the top, PVC remaining sides.) I rolled the fabric around the sides, and periodically tightened it up as the fabric relaxed.
I did it that way 'cause I needed an acoustically transparent AND "disposable" screen - I don't have the advantage of a dedicated HT space, and it shares with the primary computer gaming space. (Screen hangs directly over the keyboard.)
If you're not trying to do acoustically transparent, I'd recommend the painted wall, OR the painted MDF or even a separate sheet of sheetrock mounted on the wall. Trim it up with a little molding, or even some fancy curtain arrangement, it'll look nice.
Back to screen gain, remember that the higher the gain ( >1 ) the more likely it is to hot-spot, and the more on-angle you need to be. The closer you are to a bigger screen, the more likely this'll be an issue.
Leo
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