SB ACOUSTICS SB10PGC21-4, 10cm FIBERGLASS CONE FULLRANGE 4OHMFeatures Low damping surround and non-conductive voice coil former to ensure good dynamics and transparent sound character with fine detail. Vented voice coil for heat exchange and reduced compression. Light weight CCAW voice coil. Optimized fiberglass cone for smooth response. Compact square chassis for versatile integration. Specs Nominal Impedance 4 Ω DC resistance, Re 3.4 Ω Voice coil inductance, Le 0.15 mH Effective piston area, Sd 27 cm2 Voice coil diameter 20.4 mm Voice coil height 7.5 mm Air gap height 3 mm Linear coil travel (p-p) 4.5 mm Magnetic flux density 0.8 T Magnet weight 0.09 kg Net weight 0.24 kg Free air resonance, Fs 89 Hz Sensitivity (2.83V/1m) 84 dB Recommended Frequency Range 90-20.000 Hz Mechanical Q-factor, Qms 11.2 Electrical Q-factor, Qes 1.01 Total Q-factor, Qts 0.92 Moving mass incl. air,Mms 2.8 g Force factor, Bl 2.3 Tm Equivalent volume, Vas 1.2 liters Compliance, Cms 1.14 mm/N Mechanical loss, Rms 0.14 kg/s Rated power handling* 20 W *IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct, T/S parameters measured on drive units that are broken in.
