Динамик& P-audio Р180-2241Nominal diameter 457 mm/18 inPower rating 1000 W(AES)Nominal impedance 8& Sensitivity 97 dBFrequency range 30-500 HzChassis type Cast aluminumMagnet type FerriteMagnet weight 2.85 kg/100.6 ozVoice coil diameter 99.3 mm/3.9 inCoil material CCA-RFormer material Glass fiberCone material PaperSurround material ClothSuspension DoubleX-max 6 mm/0.24 inGap depth 8 mm/0.31 inVoice coil winding width 20 mm/0.79 inNet Weight 12.0 kg/26.5 lbPacking Dimension WxDxH 505 x 505 x 260 mmShipping Weight 14.0 kg/30.9 lb