SB Acoustics SB34SWPL76-4 12'' Subwoofer - 4 ohms

SB Acoustics

SB Acoustics SB34SWPL76-4 12'' Subwoofer


Product Specifications
Nominal Impedance 4 ohms
DC resistance, Re 3.5 ohms
voice coil inductance, Le 5.3 mH
Free air resonance,Fs 19 Hz
Sensitivity(2.83V/1m) 85dB
Mechanical Q-factor,Qms 8.6
Electrical Q-factor,Qes 0.34
Total Q-factor,Qts 0.33
Moving mass incl. air,Mms 266g
Force factor,BI 18.0Tm
Equivalent volume,Vas 78.5 liters
Compliance,Cms 0.26mm/N
Mechanical loss,Rms 3.7 Kg/s
Rated power handling* 300W
Effective piston area,Sd 458 cm²
Voice coil diameter 76 mm
Voice coil height 38 mm
Air gap height 8 mm
Linear coil travel(p-p) 30 mm
Magnetic flux density 0.62 T
Magnetic weight 2.4 Kg
Net weight 7.68 Kg

Frequency and Impedance Graph:

SB Acoustics SB34SWPL-76-4 12'' Subwoofer - 4 ohms


Drawing:

SB Acoustics SB34SWPL-76-4 12'' Subwoofer - 4 ohms

Possible box alignments:

  • 1 cubic foot sealed for f3 of 40Hz and f6 of 30Hz. A little bass boost on the amp and you have a sealed box subwoofer.
  • Your normal vented box alignments would have too long a port in too small a box. A modified extended bass shelf could be used as 2.5 cubic feet with a 3" diameter vent by 12" long for f3 of 21Hz.