Clarion WQ3010D 12" Dual Voice Coil 4-Ohm Subwoofer Max Power Handling1500 Watts Continuous Power Handling500 Watts Dual 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 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 Custom Stamped Steel Powder Coated Chassis Frequency Response30-1000 Hz Outside Dimension11-11/16 Inch Mounting Depth6-1/8 Inch Enclosure Size1.1-2.2 ft