10'' 600 Watt Blue Cone High Performance Subwoofer Blue CD Wave Electro-Plated Cone Wide Butyl Rubber Surround w/New Pattern Red steel Basket Bumped & Vented Extended Pole Piece 1.5'' High Tempreture Kapton Voice Coil 4 Ohms Impedance 70 oz. Magnet Structure 600 Watts Peak Power Fs:35.9, Qms:5.72, Qes:0.83 Qts:0.73,Vas (Cu ft)1.932 SPL: 86.7dB Overall Diameter: 10.16'' Mounting Depth: 4.72''