My Yamaha Active Servo Sub is not capable of bass below 43hz. It drops off sharply and you can hear the little sub just a floppin'. Well that settles it. The Yamaha goes back in the living room and the Dayton Ultimax is gonna be my sub for the computer. It's gonna be nasty!! I don't know that I can call the Yamaha a "subwoofer" I think "woofer" suits it better.