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Speaker coloration behind screen?

post #1 of 4
Thread Starter 
I plan on installing an acoustically transparant screen in my next media room, but one thing concerns me.
I'm not worried about the screen its self attenuating the sound, I'm worried about the small room in which the two subwoofers and other main speakers are. Will the room behind the screen color the sound? If so, how large or small should it be? I'm not really concerned about the screen, but will it effect the sound aswell? I plan on using Golden Ear speakers. Would my sound be better off in a normal setup? Thanks in advance!
post #2 of 4
Quote:
Originally Posted by alanca3 View Post

I plan on installing an acoustically transparant screen in my next media room, but one thing concerns me.
I'm not worried about the screen its self attenuating the sound, I'm worried about the small room in which the two subwoofers and other main speakers are. Will the room behind the screen color the sound? If so, how large or small should it be? I'm not really concerned about the screen, but will it effect the sound aswell? I plan on using Golden Ear speakers. Would my sound be better off in a normal setup? Thanks in advance!

The so-called acoustically transparent screen will cause some kind of minor dampening of high frequencies that can probably be measured. Nothing is perfect.

Furthermore these screens vary so they are not all exactly alike.

It will probably be possible to do a sighted evaluation showing that the screen adds some umm veiling to the sound.
post #3 of 4
Another problem with perforated screens. The DLP or LCD projector has a pixel grid. A perf screen has a grid but at a different pitch. Now if you hit a sweet spot with distance and focus, you can get a beat frequency which will appear as moire. This phenomena is more likely in small home theaters.

Light is no different than sound or electrical energy in this respect. Two frequencies beat against each other will produce a third. It's called hetrodyning.

I don't think it's that common but there have been some threads reporting it over on the projector forums throughout the years.
post #4 of 4
You'll find more information on this in the screen forums, but there are 2 basic types of AT screens--solid plastic with a whole bunch of small holes punched in it and woven fabric screens. As usual both have pluses and minuses. Most fabric screens offer no gain while solid plastic screens tend to attenuate high frequencies more. I ended up with a fabric screen which I am happy with. However, I have a very bright projector and my screen is not all that huge, compared to some.
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