Sound Storm SLP12 12 Inch, 1200 Watt, Single 4 Ohm Voice Coil Car Subwoofer One 12" SubWoofer with Single 4 ohm 1.5" Copper Voice Coil 1200 Watts MAX Power 600 Watts RMS Power 86dB Sensitivity, 35 Hz Resonant Frequency Polypropylene Cone and Rubber Surround Works in .65 CuFt Sealed enclosure 3 Year Platinum Dealer Warranty