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:
Drawing:
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.