Rockville RV12.1A 600w 12" Loaded Car Subwoofer Enclosure+Mono Amplifier+Amp Kit Rockville RV12.1A Single 12" Bass Enclosure System With matching Mono Block Amplifier 600 Watts Peak Power / 200 Watts RMS CEA-2031 Rating Single 12" Bass Enclosure System with matching Mono Block Amplifier Quasi Transmission Line Cabinet Design Bonded, Stapled and Braced 3/5" MDF Cabinet