Rockville RVB8.1A 8 Inch 300W Powered Car Subwoofer/Sub Enclosure Box + Remote Rockville RBV8.1A Single 8" 300 Watts Active Subwoofer Enclosure Power Handling: 300 Watts Peak/200 Watts RMS Size: 8" Nominal Impedance: Single 4-Ohm 38mm Voice Coil