BOSS AUDIO NX120DVC  Onyx 12 inch Dual Voice Coil (4 Ohm) 2600-watt Subwoofer One 12 " Woofer with Dual 4 ohm Voice Coil 2600 Watts MAX 1300 Watts RMS Power Handling 86dB Sensitivity, 31 Hz Resonant Frequency Poly Injection Cone and Butyl Rubber Surround Works in .9 CuFt Sealed or 1.3 CuFt Ported enclosure 3 Year Platinum Dealer Warranty One 12 " Woofer with Dual 4 ohm Voice Coil 86dB Sensitivity, 31 Hz Resonant Frequency Poly Injection Cone and Butyl Rubber Surround Works in .9 CuFt Sealed or 1.3 CuFt Ported enclosure