The KICKER 43C122 12" 300W 4 Ohm COMP Car Audio Subwoofer is the best balance between high value and high performance available in today's round subwoofer market. It features the stiffest injection molded cone with flex killing, 360 degree back bracing, updated coil cooling ...The KICKER 43C122 12" 300W 4 Ohm COMP Car Audio Subwoofer is the best balance between high value and high performance available in today's round subwoofer market. It features the stiffest injection molded cone with flex killing, 360 degree back bracing, updated coil cooling perimeter venting, high temp voice coil wire, Spiraled tinsel lead technology for ultimate durability, nickel plated push terminals, resilient steel basket, white double stitched surround, and is versatile enough to perform in vented or sealed enclosures, as well as, free air applications.