Lanzar OPTI6PM Opti Pro 400-Watt 6.5-Inch High-Power Coaxial Speaker
6.5'' Glass Fiber Cone with Butyl Rubber Surround Die Cast Aluminum Frame  1.5'' High Temperature CCAR Voice Coil, TIL Bobbin  30 Oz Magnet  220 Watts RMS 400 Watts Peak  3 Ohm Impedance  Vas: 11 Liter  Sensitivity: 92dB(1w/1m)  Frequency Response: 65Hz-7kHz  Mounting Depth: 2.95''  Overall Diameter: 6.97''  Complete with Custom Molded Grills and Hardware