Kicker 10cvr15-2 2010 Comp Vr Series 15-Inch 2 Ohm Dual Voice Coil 1000 Watt Car Subwoofer 500 watts RMS power handling Dual 2 ohm voice coils for stereo 2 ohm, parallel 1 ohm, or series 4 ohm wiring configurations Works in 1.8 to 5.2 cubic foot sealed enclosures and 3 to 5 ported enclosures