I installed my Response Corners last night and they made a big improvement, but one thing from the instructions has me wondering if I installed them correctly. It says to straddle them over the corners so that sound pressure builds up behind them; the way I installed them, they cover the walls completely, that is, there is no gap between any part of the triangle and the wall. I am guessing that this is the proper installation method, but I just wanted to double check with other people. Its not necesssary for me to leave a small gap between the wall and the Response Corner in order for sound pressure to build up behind it is it?