Lanzar OPTSW12D Opti Scion 12-Inch 1000 Watts High Power Dual Voice Coil Subwoofer Black Polypropylene Cone - Dual 2'' High Temperature Kapton Voice Coil - FREQUENCY RESPONSE: 30HZ-2KHZ Suspension Foam Surround - 80 oz. Magnet Structure - Mounting Depth: 5.83'' Stamped Steel Basket w/Nickel Input Terminal - 1000 Watts Peak Power - Overall Diameter: 12.32'' Bumped & Vented Motor Structure - Dual 4 Ohms Nom. Impedance Special Designed Plastic Magnet Cover - SPL: 88dB