Nominal diameter 460/18 mm/inch Rated impedance 8 ohm Program power 1200 watts Rated power 600 watts Sensitivity 98 dB Frequency range F0~1500 Hz Effective piston diameter 395/15.6 mm/inch Minimum impedance 5.9 ohm Voice coil diameter 101.6/4 mm/inch Voice coil material copper Voice coil winding depth 24/0.95 mm/inch The number of layers 2 Kind of layer inside/outside Top plate thickness 12/0.47 mm/inch Cone material paper Cone design straight Frame material aluminium