Clarion WG2510 10" Single Voice Coil 4-Ohm Subwoofer Single 4_ Voice Coil Subwoofer 900W Max Power 300W Rms Heavy-Duty Copper Voice Coils 10" Max Power Handling900 Watts Continuous Power Handling300 Watts Single 4-Ohm Heavy Duty Voice Coils Aluminumized Composite Dust Cap Reinforced FRP/ Paper Cone Design Nitrile Butadiene Rubber High Excursion Surround Hyper Extended Vented Pole Piece S.E.T. (Spider Exhaust Technology) Cooling Custom Stamped Steel Powder Coated Chassis Frequency Response35-1000 Hz Efficiency83 dB/W/m Basket TypeStamped Steel Number of Voice Coils1 Impedance4 Ohm Outside Dimension9-25/32 Inch Mounting Depth5-23/23 Inch Enclosure Size0.4-1.1 ft