Rockford Fosgate P300-12 Punch 300 Watt Powered Loaded 12-Inch Subwoofer Enclosure
The P300-12 powered  subwoofer is an "all-in-one" solution when adding bass to a factory  system or just to save space. This model features a 12-Inch subwoofer in a  sealed enclosure powered by an internal 300 watt amplifier.