The 3-Pack Planet Audio 12 Inch 1800W Dual 4 Ohm Voice Coil Car Audio Subwoofer can handle 1800 watts of MAX power and 900 watts of RMS power. Other features include a mounting depth of 5 3/8 inches and an impedance of 4 ohms. Thump your car audio system with this AC12D subwoofer! With a 2 inch voice coil and 88 dB efficiency, you are really getting an incredible deal on this subwoofer. Planet Audio subwoofers are meant to sound great, and be sure to pair this with a Planet Audio or Boss Audio amplifier to get a perfect match. Please note, this subwoofer is not a CEA 2006 compliant, therefore is not true wattage rated!.....