Tvad, you know from our previous exchanges that I have used tube traps, RPG diffusors, Room Lens, acoustic mirrors, LEDE, and Holographs, one pair of which I still use. I have tried digital corrections also. I have had tube traps. I have used Combac and Marigold dots on the walls, I have used MD Brilliant Pebbles, Shun Mook Mpingo disks, and recently Acoustic Revive guartz products. Once I even had the Cello analog equalizer. The rug never proved very important for the good or bad. You knew all of this so why did you post?