I am always tweaking my system and moving speakers around looking for the best configuration. Recently, I have started making my own accoustic panels and setting them up around the room. I have drawn a diagram of my room, and I have shown the panels in grey. The ones near my fronts are 2x4 (vertical), and the ones at the rear and the front are 2x2. The ones by the rear are placed under the rear channels (18" clearance from the top of the rear to the ceiling). My room is carpeted, and I have Armstrong ceiling tiles (sound reduction). I have been able to get the front soundstage to disappear quite well, but the back of the room sounds a little too lively (or better yet...localized). When I am listening to DVD-A or SACD I am a little too aware of the rears. As I mentioned, I have room above the speaker to do some work, or I could do other things if suggested. I have a BFD equalizing my sub and bass response in the room is quite flat and the sub disappears quite well too. Any suggestions?