Power RMS / Max. 100 / 200 Watts Impedance 1 x 4 Ω DC resistance 3.1 Ω Frequency response 25 – 250 Hz Resonance frequency Fs 45 Hz Qms 1.11 Qes 0.67 Qts 0.42 Compliance Cms 333 µm/N Vas 22 L Force factor B*I 7.0 Tm Sensitivity SPL 91 dB @ 2.83V / 1m 88 dB @ 1W / 1m Cone area Sd 216 cm² Moving mass Mms 37 g Cone material Paper cone Mechanical resistance Rms 9.5 kg/s Voice coil diameter ø 37 mm Voice coil winding height 16 mm Xmax +/- 5 mm