SB ACOUSTICS SB34SWNRX-S75-6, 34cm NOREX PAPER CONE SUBWOOFER 6OHMFeatures Hard paper cone for improved piston operation (made in-house) Vented pole piece for minimum compression Vented cast aluminum chassis for optimum strength and low compression 3 copper voice coil (4-layer) for improved power handling Long life silver lead wires Low damping medium hardness rubber surround for improved linearity and power handling Non-conducting fiber glass voice coil former for minimum damping Specs Nominal Impedance 6 Ω DC resistance, Re 4.5 Ω Voice coil inductance, Le 3.0 mH Effective piston area, Sd 508 cm2 Voice coil diameter 75.6 mm Voice coil height 28.5 mm Air gap height 6 mm Linear coil travel (p-p) 22 mm Magnetic flux density 0.63 T Magnet weight 2.1 kg Net weight 5.85 kg Free air resonance, Fs 19 Hz Sensitivity (2.83V/1m) 88 dB Mechanical Q-factor, Qms 5.0 Electrical Q-factor, Qes 0.34 Total Q-factor, Qts 0.32 Moving mass incl. air,Mms 154 g Force factor, Bl 15.4 Tm Equivalent volume, Vas 164 liters Compliance, Cms 0.46 mm/N Mechanical loss, Rms 3.7 kg/s Rated power handling* 200 W * IEC 268-5, T/S parameters measured on drive units that are broken in.
