The Planet Audio 10-Inch 1500W Dual Voice Coil 4-Ohm Car Audio Subwoofer can handle 1500 watts of peak power and 750 watts of RMS power. Hit your car audio system with these AC10D subwoofers! Put this subwoofer in any sealed or ported box to make it sound great. The recommended box size is 1 cubic foot for a sealed box and 2 cubic feet for a ported box. The frequency response on this subwoofer is 23 Hz 3 Hz with an efficiency of 96 dB. This sub fits in most cases with a mounting depth of 4.75 inches.