Kicker CompVR 07CVR104 10-Inch 4-Ohm DVC Subwoofer 10-inch CompVR Subwoofer with 4-ohm impedance Injection-molded cone with 360-degree back bracing and aluminized coating; ribbed Santoprene surround 400 Watts RMS (800 Watts peak) power handling 25-500 Hz frequency response One-year limited warranty