Kicker CVR10 CompVR 10-Inch (250mm) Subwoofer, 4-Ohm DVC Bundle10 CompVR 4 Ohm The CompVR 10-Inch Subwoofer is a 4? Dual voice coil design, built to get the most out of your amp. The dual voice coil design adds a new level of wiring flexibility, to get the most out of KX Series amplifier, no matter how many subs you add to your ride. The CompVR 10-Inch Subwoofer works best with a sealed or ported enclosure and 400 watts of recommended power. See below for more details.