I currently have two (front) Polk R300, two (rear) Polk R150, one (center) Polk CSR and an old JVC 10" subwoofer. I'm looking to replace the subwoofer with something better and wanted your opinions on a good subwoofer to replace it with. I'd prefer to keep my budget less than $200 but can maybe wait till Christmas if I choose to go over that.
Oh and little info on the room. The TV is in the corner with about 14 foot between it and the center channel from the viewer with the subwoofer behind the TV. Also the den is part of an open floorplan with the kitchen and dining room behind it which has apparently made my subs lack of power a glaring weakness.