- Power RMS 1000 WATT - Maximal Power 2000 WATT - Nominal Diameter 390 MM - Rated Impedance 8 OHM - Sensitivity (1w/1m) 97dB - Frequency Range 45-2000 Hz - Voice Coil Diameter 114 MM - Magnet Diameter 250 MM - Resonance Frequency Fs 40 Hz - Total Factor Qts 0.29 - Effective Moving Mass Mms 160 GR - Equivalent Cas air load Vas 98 Liters - Waterproof Fibre Cone - Nett Weight 13.79 KG - Gross Weight 15.86 KG - Packing Size 45*45*24 CM