SCT7511NS Channels 1 Throat Diameter 1.5 in(38mm) Mounting Type bolt on Nominal Impedance 8 ohm RMS 110W Sensitivity(1W/1M) 107dB Frequency Range 800-20KHz Diaphragm Material Titanium Voice Coil Diameter 2.93 in(74.5mm) Voice Coil Material ...