SB Acoustics SB23NRXS45-8 Premium Quality 8" Midwoofer. New.

Description

EACH - New-in-box SB Acoustics SB23NRXS45-8 8" midwoofer, among the finest affordable 8" midwoofers on the market.
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 design
Non-conducting fiber glass voice coil former for minimum damping
CCAW voice coil for reduced moving mass
Long life silver lead wires
Nominal Impedance 8 Ω
DC resistance, Re 5.6 Ω
Voice coil inductance, Le 0.60 mH
Effective piston area, Sd 216 cm
2
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) 88.5 dB
Mechanical Q-factor, Qms 5.4
Electrical Q-factor, Qes 0.41
Total Q-factor, Qts 0.38
Moving mass incl. air,Mms 24.5 g
Force factor, Bl 7.5 Tm
Equivalent volume, Vas 94 liters
Compliance, Cms 1.42 mm/N
Mechanical loss, Rms 0.77 kg/s
Rated power handling* 60 W