Pioneer TS-SW301 12-Inch 1000W Maximum 250W Nominal Shallow-Mount Subwoofer 12-inch Shallow Series subwoofer with 1000 Watts maximum (250 nominal) power handling Composite IMPP cone with interlaced carbon fiber and glass fiber 4-Ohm single voice coil design 20 Hz to 114 Hz frequency response with 91 dB sensitivity 3-4/10-Inch mounting depth