Rockford Fosgate R1-1X12 12" 400W Car Subwoofer + Box + 1000W Mono Amp + Amp Kit New Rockford Fosgate R1 1X12 12" 400 Watt Loaded Car Subwoofer Sub Enclosure Power Handling: 200 Watts RMS 400 Watts Max Nominal Impedance (ea): 4 Ohm