2) Boss CXX12 12" 2000W Car Audio Power Subwoofer Sub+ Mono Amplifier+Amp Kit New Boss CXX12 12" 2000 Watt 4 Ohm Car Audio Power Subwoofer Sub Woofer Stereo (Pair) Total Power Output: 1000 Watts (2000W per pair) Impedance: 4 Ohms Voice Coil Structure: SINGLE Cone Material: Polypropylene