6.5'' High Power Subwoofer Non-Press paper Cone Specially Treated Foam Edge Suspension 1.5'' 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) Mounting Depth: 3" Rubber magnet Boot Cover Max Pro 6.5'' 600 Watt Small Enclosure 4 Ohm Subwoofer