SB Acoustics SB20PFC30-4 8'' Paper Cone Woofer

SB Acoustics

SB Acoustics SB20PFC30-4 8'' Paper Cone Woofer


Product Specifications
Nominal Impedance 4 ohms
DC resistence,Re 3.4 ohms
voice coil inductance,Le 0.71 mH
Free air resonance,Fs 33.7 Hz
Sensitivity(2.83V/1m) 92.5 dB
Mechanical Q-factor,Qms 2.78
Electrical Q-factor,Qes 0.37
Total Q-factor,Qts 0.33
Moving mass incl. air,Mms 22.4 g
Force factor,BI 6.6 Tm
Equivalent volume,Vas 66.2 liters
Compliance,Cms 1.0 mm/N
Mechanical loss,Rms 1.7 Kg/s
Rated power handling* 50W
Effective piston area,Sd 216 cm²
Voice coil diameter 35.5 mm
Voice coil height 16.5 mm
Air gap height 5 mm
Linear coil travel(p-p) 11.5 mm
Magnetic flux density 1.2 T
Magnetic weight 0.54 Kg
Net weight 1.43 Kg

Frequency and Impedance Graph:

SB Acoustics SB20PFC30-4 8'' Paper Cone Woofer

Drawing:

SB Acoustics SB20PFC30-4 8'' Paper Cone Woofer