SB ACOUSTICS SATORI MR16PNW-4, 17cm PAPYRUS CONE NEODYMIUM MIDRANGE WHITE 4OHMFeatures Vented aerodynamic cast aluminium chassis for optimum strength and low compression Proprietary cone material with EGYPTIAN PAPYRUS™ fibres made in-house Soft low damping rubber surround for optimum transient response Advanced BIMAX spider for improved linearity Powerful optimized low distortion neodymium motor system Non-conducting fibre glass voice coil former for minimum damping Extended copper sleeve on pole piece for low inductance and reduced distortion CCAW voice coil for reduced moving mass Long life silver lead wires attached 180° apart for improved stability Vented pole piece and coil former for reduced compression High piston to chassis diameter ratio Gasket and bolt hole protrusions for reduced coupling to speaker cabinet Mode balanced cone for reduced break-up Specs Nominal Impedance 4 Ω DC resistance, Re 3.2 Ω Voice coil inductance, Le 0.11 mH Effective piston area, Sd 119 cm2 Voice coil diameter 35.5 mm Voice coil height 11.2 mm Air gap height 5 mm Linear coil travel (p-p) 6.2 mm Magnetic flux density 1.17 T Magnet weight (NEO) 0.13 kg Net weight 1 kg Free air resonance, Fs 31 Hz Sensitivity (2.83 V / 1 m) 92.5 dB Mechanical Q-factor, Qms 4.85 Electrical Q-factor, Qes 0.26 Total Q-factor, Qts 0.25 Moving mass incl. air, Mms 11.2 g Force factor, Bl 5.2 Tm Equivalent volume, VAS 47.2 liters Compliance, Cms 2.35 mm/N Mechanical loss, Rms 0.45 kg/s Rated power handling* 40 W * IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct.
