Does anyone have any info on the effect accoustically transparent screens have on picture quality? It will be used with a Sony VPG-G90U projector. I have heard that brightness is affected. Can this be compensated for by increasing brightness from the CRT? Does increased brightness from the CRT decrease CRT life. In my room the bottom of the screen will only be approx 20"off the floor. If I don't use a transparent screen the center channel will be very low.(ie. under the screen) Will this position be detrimental to center channel info?