Rated power30 Watt Maximum power 50 Watt Nominal impedance Z 8 Ohm Frequency response 100–20000 Hz Mean sound pressure level 88 dB (1 W/1 m) Maximum cone displacement +/−2,5 mm Resonance frequency fs 125 Hz Magnetic induction 1,2 T Magnetic flux 225 Wb Height of front pole-plate 3 mm Voice coil diameter 20 mm Height of winding 4 mm Cutout diameter 75 mm Net weight 0,5 kg D. C. resistance Rdc 7,2 Ohm Mechanical Q factor Qms 3,24 Electrical Q factor Qes 0,58 Total Q factor Qts 0,49 Equivalent volume Vas 1,1 l Effective piston area Sd 29 cm2 Dynamically moved mass Mms 1,8 g Force factor Bxl 4,0 Tm Inductance of the voice coil L 0,3 mH Heat resistance −25 ... 70 °C