Resonance frequency [fs] 1000/55 Hz
Mechanical Q factor [Qms] 8.03/3.06
Electrical Q factor [Qes] 2.02/0.56
Total Q factor [Qts] 1.61/0.48
Force factor [Bl] 1.4/4.8 Tm
Mechanical resistance [Rms] 0.18/1.41 kg/s
Moving mass [Mms] 0.23/12.5 g
Compliance [Cms] 0.11/0.67
mm/N
Effective diaph. diameter [D] 1.1/6.6 mm
Effective piston area [Sd] 3.8/138 cm²
Equivalent volume [Vas] 0.002/17.9 l
Sensitivity (2.83V/1m) 90 dB
Ratio Bl/√Re 0.85/2.77 N/√W
Ratio fs/Qts 620/116 H

Nominal impedance [Zn] 4 Ω
Minimum impedance [Zmin] 3.3/3.8 Ω
Maximum impedance [Zo] 13.4/19.4 Ω
DC resistance [Re] 2.7/3 Ω
Voice coil inductance [Le] 0.02/0.35 mH
Power Handling
100h RMS noise test (IEC 17.1)* 100 W
Long-term max power (IEC 17.3)* 200 W
*Filter: 2nd order - 3000 Hz
Voice coil diameter 19/32 mm
Voice coil height 1.8/12 mm
Voice coil layers 2/2
Height of gap 2/4 mm
Linear excursion ± 0.1/4 mm
Max mech. excursion ± 1.6/8 mm
Unit weight 0.05/0.6 kg