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Features: 1) 12" double stacked magnet subwoofer 2) High quality injected poly cone 3) Silver finish die cast aluminum Basket 4) 100oz strontium magnet 5) 2" 4 layer high temperature TIL voice coil 6) Chrome finish terminals 7) Power handing: 500W R.M.S. 8) Impedance: 2 x 4ohms 9) Frequency response: 29 - 1000Hz 10) Sensitivity: 92±3dB 11) Mounting depth: 6.15"