CERWIN VEGA VEGA3104 1400-Watt 10 DVC 4-Ohm 1200W/450W RMS 10" Dual 4 Ohm Vega3 Series Sub-woofer, Power Handling:Peak: 1200 watts RMS: 450 watts, Impedance: 4 ohms, High strength composite polypropylene cone, Butyl rubber surround, Deep drawn heavy gauge stamped steel basket XFV Cross-flow window venting allows for massive heat dissipation from the voice coil2" Voice coil with rolled aluminum formerLarge, high strength motor structureForge alloy yoke (FAY) for better magnetic transferResonance Frequency (Fs): 30 HzTop-mount depth: 5-3/8"Sensitivity: 82 dB 1-year Manufacturer's Warranty