The best idea would obviously be to move it to a rectangular room, but that isn't an option. I have tried doing the "sub crawl", but oddly enough everywhere sounds like a null zone when I do that. Maybe I'm doing it wrong. There's only one place it sounds acceptable (see picture) but even that sounds horribly boomy. If I turn the sub off and run the bass out of the mains this actually sounds the best, but unfortunately my mains are only good to about 60hz. Placing the sub up by my mains also sounds bad oddly enough. Any ideas?