Sound Storm SS10 10 Inch, 600 Watt, Single 4 Ohm Voice Coil Car Subwoofer One 10" SubWoofer with Single 4 ohm 1.5" Copper Voice Coil 600 Watts MAX Power 300 Watts RMS Power 88dB Sensitivity, 32.3 Hz Resonant Frequency Black Fiber Injection Cone and Foam Surround Works in 1.15 CuFt Sealed enclosure 3 Year Platinum Dealer Warranty