SB-Acoustics SB23NRXS45-4 / Norex

FEATURES:

• Soft low damping rubber surround for improved transient response
• Shorting ring in motor system for reduced distortion
• Vented pole piece for reduced compression
• Vented cast aluminum chassis for optimum strength and low compression
• Shallow designNon-conducting fiber glass voice coil former for minimum damping
• CCAW voice coil for reduced moving mass
• Long life silver lead wires

SPECS

• Nominal Impedance 4 Ω
• DC resistance, Re 3.3 Ω
• Voice coil inductance, Le 0.29 mH
• Effective piston area, Sd 216 cm²
• Voice coil diameter 45.5 mm
• Voice coil height 19 mm
• Air gap height 6 mm
• Linear coil travel (p-p) 13 mm
• Magnetic flux density 0.86 T
• Magnet weight 0.8 kg
• Net weight 2.74 kg
• Free air resonance, Fs 27 Hz
• Sensitivity (2.83V/1m) 92 dB
• Mechanical Q-factor, Qms 5.55
• Electrical Q-factor, Qes 0.32
• Total Q-factor, Qts 0.3
• Moving mass incl. air,Mms 27.2 g
• Force factor, Bl 6.9 Tm
• Equivalent volume, Vas 87.5 liters
• Compliance, Cms 1.33 mm/N
• Mechanical loss, Rms 0.8 kg/s
• Rated power handling* 60 W

* IEC 268-5, T/S parameters measured on drive units that are broken in.

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