Power RMS / Max. P 100 / 200 Watts Impedance Z 1 x 4 Ω DC resistance Re 3.3 Ω Frequency response 25 – 250 Hz Resonance frequency Fs 46 Hz Mechanical Q factor Qms 1.76 Electrical Q factor Qes 0.77 Total Q factor Qts 0.54 Compliance Cms 225 µm/N Equivalent air volume Vas 15 L Force factor B*I 8.0 Tm Sensitivity SPL 91 dB @ 2.83V / 1m 88 dB @ 1W / 1m Cone area Sd 216 cm² Moving mass Mms 40 g Cone material Paper cone Mechanical resistance Rms 1.6 kg/s Voice coil diameter ø 37 mm Voice coil winding height 16 mm Max. linear excursion Xmax +/- 5 mm