Excellent! OK - this is the deal. My room dimensions are changed. I am going to go ahead as planned. When I chamfer the corners, I will be screwing the plywood in, so it will be easily removed. At the least it will be an experiment. (With nothing to compare against ) If the room sounds wierd, I can easily remove and replace with another material. This will also give me a little time to replenish my unnecessary cash fund. I'll take pic's and let you know how it goes. I plan on using my Denon AVR1400, purchasing an Optoma H31 & screen and using my Paradigm Micros or Atoms? for front & rear surround, with a Paradigm Center, CC50?, and upgrading to digital cable, best I can do where I live. Again, thanks for all the info. Once I get the framing done, hopefully this week, we'll start talking about sub placement, and how to hook up two subs.