SB Acoustics SB16PFCR25-4 6'' Paper Cone Woofer

SB Acoustics

SB Acoustics SB16PFCR25-4 6" Paper Cone Woofer


Product Specifications
Nominal Impedance 4 ohms
DC resistence,Re 3.2 ohms
voice coil inductance,Le 0.56 mH
Free air resonance,Fs 35 Hz
Sensitivity(2.83V/1m) 89.5 dB
Mechanical Q-factor,Qms 2.76
Electrical Q-factor,Qes 0.39
Total Q-factor,Qts 0.34
Moving mass incl. air,Mms 13.8 g
Force factor,BI 5.8 Tm
Equivalent volume,Vas 32.7 liters
Compliance,Cms 1.50 mm/N
Mechanical loss,Rms 1.1 Kg/s
Rated power handling* 40W
Effective piston area,Sd 124 cm²
Voice coil diameter 25.4 mm
Voice coil height 14 mm
Air gap height 5 mm
Linear coil travel(p-p) 9 mm
Magnetic flux density 1.06 T
Magnetic weight 0.36 Kg
Net weight 0.96 Kg

Suggested Box alignments:

  • A Sealed enclosure of 0.25 to 0.3 cubic feet (7 liters to 8.5 liters) should have a response of 3dB down on the low end of about 80Hz.
  • A ported enclosure of 0.4 cubic feet (11.3 liters) with a 1.5" diameter vent by 5.5" long should have a 3dB down point of about 55Hz.
  • A ported enclosure of 0.5 cubic feet (14 liters) with a 1.5" diameter vent by 5" long should have a 3dB down point of about 50Hz.

Frequency and Impedance Graph:

SB Acoustics SB16PFCR25-4 6'' Paper Cone Woofer

Drawing:

SB Acoustics SB16PFCR25-4 6'' Paper Cone Woofer