Pyramid PW865US 8-Inch HighTemperature Kapton Voice Coil Woofer Poly-Coated Paper Cone - Heavy Magnt Structure - SPL @ 1W/1M: 95dB Non Fatiguing Rubber Suspension - 4 Ohm Impedance - Magnet Weight: 65 oz. Stamped Steel Basket w/Golden Terminal - Impedance: 4 Ohm - Mounting Depth: 3.5'' Bumped & Vented Motor Structure - 400 Watts RMS/800 Watts Peak 2'' High Temperature Kapton Voice Coil - Overall Diameter: 8.125''