Pyramid PW1048USX 10-Inch 500 Watt High Performance 8 Ohm Subwoofer Black Strong Non-Pressed Paper Cone - 8 Ohms Impedance - Mounting Depth: 4.21" Non-Fatiguing Rubber Suspension - 250 Watts RMS/500 Watts Peak Stamped Steel Basket - Overall Diameter: 10.20'' Bumped & Vented Motor Structure - SPL @ 1W/1M: 85.6dB 2" High Temperature Kapton Voice Coil - Magnet Weight: 40 oz.