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Features: 1) 12" woofer 2) Black wrinkle finish die cast aluminum Basket 3) Massive 150oz, three stacked strontium magnets 4) 2" large Rubber surround and laminated glass fiber composite/pulp cone 5) 3" 4 layer high temperature glass fiber/TIL voice coil 6) Impedance: 2 x 4ohms 7) Power handing: 1000W R.M.S. 8) Frequency response: 23 - 700Hz 9) Sensitivity: 92.9dB 10) Chrome screw terminals