Kicker 08S15L54 Solo-Baric 15-Inch 380mm 4-Ohm DVC Subwoofer 15-inch Solo-Baric L5 subwoofer Vacuum-formed, ultra-rigid design with vented 360-degree back bracing 750 Watts RMS (1500 Watts peak) power handling with 4-ohm impedance 18-100 Hz frequency response One-year limited warranty