LSK-661 .SIZE: 8" .MAGNET: 20 OZ (OD100mm) .VOICE COIL: 1.2"(ASV) .MAX POWER: 70W(RMS) .SENSITIVITY(1M/1W): 88dB .FREQUENCY: 55HZ-5.8KHZ .AIR GAP HEIGHT: 5mm .IMPEDANCE: 8 Ohm