Yes I have Mike. It was a 11 foot wide 1.66 aspect Ratio Flanked by the McIntosh 7 foot high(1993) that had 4x 12" and like 24x 1" tweeters. By positioning the loudspeakers forward of the screen and having heavy drapes behind the speakers and seating area very little sound goes into the screen.
The room was Rococo design (not my cup of tea) but the dede concept worked great. That was a prologic system whwere much of the soundfield was coming out of the left and rights. One of the best sounding McIntosh rooms ever. 2 ikw monoblocks.
Notice the selection of Dynaudio's D'appolito type controlled directivity keeps the sound from creeping into the screen as well, like a B&W 800 would inevitably do.
There is a huge difference in the parabola with the 1.66 short radius and the 2.35 long radius, so this combination of factors assures the desired results. The image is horter vertically cutting doen on the volume of reflected sound, and also the radius is very moderate, it is focussing on a point 1.5 to 2 times bhid the rear wall.
These are the techniques being used to eliminate the echoes this time around:
1)Absorption on the corner fronts,
2) large Controlled directivity speakers
3) Maintaining the image height short vertically
4) Accomodating the screen optimum light ray trace to the anamorphic lens pincushion and focus (that is a compromise that is determioned by the expert in the screen factory). The result is a SHALLOWER CURVE/Longer Radius.
5)Absorption on the rear centre wall to eliminate the bounce forward.
6) Not pointing any side or surround speaker or speaker lobe towards the front where the screen is. Create killing zones with the surrounds from top down -with directivity control as well, or from the sides in) Be careful not to mount speaker with passive radiators or powered speakers in the ceiling they will not work the radiator wont move , the amp may heat up.If you use a dipolar side surround you will hear it coming from inside the screen, so avoid.
7) Mount the screen in the upper 1/3 of the wall which creates a faint point of focus 18" above any listeners heads thus imperceptible.
I am very confident that it will sound fantastic. Better than the last time.