The CompVR 12-Inch Subwoofer is a 4 ohm dual voice coil design, built for easy wiring. CompVR creates your bass using high-temp, dual voice coils. A ribbed Santoprene surround also gives the cone added strength under stress. The perimeter venting, Spiralead tinsel-lead technology, and spring-loaded push terminals are part of the high-performance engineering standards found on every KICKER woofer. The CompVR 12-Inch Subwoofer works best with a sealed or ported enclosure and 400 watts of recommended power.