• High-power subwoofer ;• Nonpressed paper cone;• Specially treated foam edge suspension;• 1.5" high-temperature aluminum voice coil;• Imp: 4ohm ;• Rubber magnet boot cover;• 6.5";• 600W max;• 40oz magnet;• 87dB SPL;• Mounting depth: 3"; 6.5-Inch High Power Subwoofer Non-Press paper Cone Specially Treated Foam Edge Suspension 1.5-Inch High Temperature Aluminum Voice Coil Magnet Weight: 40 Oz Impedance: 4 Ohm Fs: 80Hz, Qms: 4.05, Qes: 1.3, Qts: 1.2, SPL: 87(dB), Vas: 6.8(Cuft)