Polk's top of the line PSW650 sub. Dual 10" powered subwoofer with all the amplifier controls. It is very musical and has good reviews out there. $365, plus shipping if applicable. Here is their homepage for more information and pictures: http://www.polkaudio.com/home/produc...y=7&speaker=48 It has maybe two scratches on it, and I can take pictures next week. It barely gets used currently, but I will be replacing it with a DIY Adire 15" when I move this spring. I am in Chicago, but will be driving through to East Lansing and Minneapolis in a few weeks. I am in finals from now through the 19th, so I'm looking to have it picked up, delivered, or shipped sometime after that. Keep in mind this is good build quality, so 61 lbs of shipping weight. Thanks.