LSK-666A .DIAPHRAGM:TITANIUM .MAGNET: 15 OZ(OD90mm) .VOICE COIL:1.35"(KSV) .MAX POWER:50W(RMS) .SENSITIVITY(1M/1W):102 dB .FREQUENCY:800HZ-20KHZ .AIR GAP HEIGHT: 4.5mm .SIZE: 210 X 245 x 200mm .IMPEDANCE:8 Ohm