I ended up using 6 of the panels to see if I would get any improvement. I wrapped them in fabric and hung them up at reflection points. They did cut down on sibilance but didn't do much with the echo. I hung heavy drapes in the back of the room and that seemed to help. I will keep the ceiling panels in place for now. After doing some reading, I'm going to try to use some Owens Cornings 705 or mineral wool to make my own panels. Thanks for the help.
11/23/10 at 12:36pm