Kicker 10C10D4 10" 600 Watts Peak / 300 Watts RMS Dual 4-Ohm Car Subwoofer with Quad VentingTM Kicker 10C10D4 Comp10D 10" Car Subwoofer Power Rating: 300 Watts Peak / 150 Watts RMS The world's best subwoofer value Renowned KICKER power and durability Impedance: 4-Ohm DVC