Clarion WF2510 10-Inch Single Voice Coil 4-Ohm Shallow Mount Subwoofer 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 Dual Strontium Ferrite Magnets Hyper Extended Vented Pole Piece S.E.T. (Spider Exhaust Technology) Cooling Dual Gold Plated Terminal Blocks Linear Cotton Spider with Integrated Tinsel leads Custom Shallow Stamped Steel Powder Coated Chassis Frequency Response40-1000 Hz Efficiency83 dB/W/m Basket TypeStamped Steel Number of Voice Coils1 Impedance4 Ohm Outside Dimension9-25/32 Inch Mounting Depth2-25/32 Inch Enclosure Size0.4-0.6 ft