What is the best way to do it? I have an SVS PB12+ (I think that is the model) - 2 downfiring 12's with equalizer, gain adjust and phase adjust. The enclosure is about 2 feet behind couch and off to the left about 3' (from edge of couch). If I sit in middle of couch (ideal viewing location) I get a good amount of bass, but if I move to the far right of the couch, the bass is abuot 2-3 times more...now I understand why my wife is always saying we have too much bass...she is getting the blunt of it and I am getting the 'leftovers'...hehehe...right now I have it at about 100 deg...that is if straight up is 90 deg (which I believe it is).