SB Acoustics SB15SFCR39-8 5''X 8'' Paper Cone Racetrack Woofer
Product Specifications
| Nominal Impedance | 8 ohms |
| DC resistence,Re | 6.2 ohms |
| voice coil inductance,Le | 1.3 mH |
| Free air resonance,Fs | 31 Hz |
| Sensitivity(2.83V/1m) | 87 dB |
| Mechanical Q-factor,Qms | 6.46 |
| Electrical Q-factor,Qes | 0.46 |
| Total Q-factor,Qts | 0.42 |
| Moving mass incl. air,Mms | 23.2 g |
| Force factor,BI | 7.9 Tm |
| Equivalent, Vas | 51 lts |
| Compliance,Cms | 1.13 mm/n |
| Mechanical loss, Rms | 0.7 Kg/s |
| Rated power handling* | 80 W |
| Effective piston area,Sd | 178 cm² |
| Voice coil diameter | 38.5 mm |
| Voice coil height | 16 mm |
| Air gap height | 6 mm |
| Linear coil travel(p-p) | 10 mm |
| Magnetic flux density | 0.86 T |
| Magnetic weight | 0.54 Kg |
| Net weight | 1.65 Kg |
Suggested Box Alignments:
- 0.5 - 0.7 cf sealed for an F3 of 58Hz
- 0.7 cf with 2" dia. x 7" long port for an F3 of 42Hz
- 1.0 cf with 2" dia. x 6" long port for an F3 of 39Hz
With Matching passive radiator
- 0.6 cf for an F3 of 49Hz
- 0.8 cf for an F3 of 45Hz
- 1.0 cf for an F3 of 43Hz
- 1.2 cf for an F3 of 42Hz
Frequency And Impedance Graph:
Drawing:
