Rated power40 W Maximum power 60 W Nominal impedance Z 4 Ohm Frequency response 70–16000 Hz Mean sound pressure level 85 dB (1 W/1 m) Resonance frequency fs 100 Hz Magnetic induction 0,85 T Magnetic flux 210 Wb Height of front pole-plate 4 mm Voice coil diameter 20 mm Height of winding 5 mm Cutout diameter 112 mm Net weight 0,29 kg D. C. resistance Rdc 3,8 Ohm Mechanical Q factor Qms 2,49 Electrical Q factor Qes 2,19 Total Q factor Qts 1,16 Equivalent volume Vas 4,4 l Effective piston area Sd 78 cm2 Dynamically moved mass Mms 4,8 g Force factor Bxl 2,3 T m Inductance of the voice coil L 0,4 mH Protective system IP 65 Heat resistance −40 ... 80 °C Colour schwarz / black