SB ACOUSTICS SB23MFCL45-8, 23cm POLYPROPYLENE CONE SUBWOOFER 8OHMFeatures Long stroke design Linear high stability suspension Low damping rubber surround Long copper voice coil Non-conducting reinforced fibre glass coil former Very stiff mineral filled Polypropylene cone Vented cast aluminium chassis Large vented motor system Long life silver lead wires Optimized for smaller enclosures Specs Nominal Impedance 8 Ω DC resistance, Re 6.2 Ω Voice coil inductance, Le 1.02 mH Effective piston area, Sd 210 cm2 Voice coil diameter 45.5 mm Voice coil height 29.2 mm Air gap height 8 mm Linear coil travel (p-p) 21 mm Magnetic flux density 1.03 T Magnet weight 2.0 kg Net weight 4.70 kg Free air resonance, Fs 28.5 Hz Sensitivity (2.83V/1m) 85 dB Mechanical Q-factor, Qms 7.3 Electrical Q-factor, Qes 0.46 Total Q-factor, Qts 0.43 Moving mass incl. air,Mms 53 g Force factor, Bl 11.3 Tm Equivalent volume, Vas 37 liters Compliance, Cms 0.59 mm/N Mechanical loss, Rms 1.3 kg/s Rated power handling* 150 W * IEC 268-5, T/S parameters measured on drive units that are broken in.
