This has been a fun little project. I think I need to work on the room acoustics. I have two PSW505's stacked and corner loaded. For this test I put the Onk on a volume of 45. I would have liked to run it hotter but the bass police was home. I have individual tones for 20-99Hz.
It was interesting to see which parts of the walls vibrated at different frequencies. I found that a vent in my ceiling makes an awful metal on metal vibrating noise at exactly 84Hz, no less, no more, just exactly 84Hz. I found that my loudest point is 48-49Hz, at 102db. My weakest point was at 20Hz, at 76db. It was really cool to see the db meter move at 20Hz, even though you couldn't really hear much of anything.
Obviously, I would like my peak to be at the 30Hz and lower area. Maybe its just not possible, or maybe it is with the right room acoustics. Any pointers?