The 43CVR124 CompVR 12 Inch Subwoofer is a 4 Ohm dual voice coil design, built for easy wiring. The CompVR gets earth shattering bass to you by engineering a stable base and a cool, powerful motor. Powerful magnets and dual high temp voice coils move a stiff polypropylene cone, while perimeter venting keeps the air moving around the motor. You get strong bass that keeps on bumping day in – day out. The CompVR 10 Inch Subwoofer works best with a sealed or ported enclosure and 400 watts of recommended power.