Blue Injection Molded Cone - Flat Progressive Spider - 1200 Watt Max Power Handling - Mounting Depth: 5.76"" * Non-Fatiguing Big Rubber Suspension - New Wave-Like Rubber Gasket - Impedance:4 Ohm (Per Coil) * Blue Chrome-Plated Steel Basket - Rubber Magnet Boot - Fs:40, Qms:5.0, Qes:0.90, Qts:0.75, Vas (Cu ft)5.204 * Bumped Vented Extended Pole Piece - 2"" High Temperature Dual Kapton Voice Coil - SPL: 84dB * Silver Plated Terminal - Magnet Weight: 70 oz - Overall Diameter: 12.8"" * Blue Injection Molded Cone * Non-Fatiguing Big Rubber Suspension * Blue Chrome-Plated Steel Basket * Bumped Vented Extended Pole Piece * Silver Plated Terminal * Flat Progressive Spider * New Wave-Like Rubber Gasket * Rubber Magnet Boot * 2"" High Temperature Dual Kapton Voice Coil * Magnet Weight: 70 oz * 1200 Watt Max Power Handling * Impedance:4 Ohm (Per Coil) * Fs:40, Qms:5.0, Qes:0.90, Qts:0.75, Vas (Cu ft)5.204 * SPL: 84dB * Overall Diameter: 12.8"" * Mounting Depth: 5.76"" * Sold as : Unit