SB Acoustics SB42FHCL75-6 15'' Honeycomb cone Subwoofer
Features:
- Light weight rigid honeycomb cone (hard paper honeycomb with fiber glass skin layers)
- 3″ copper voice coil for improved power handling
- Long life silver lead wires
- Vented pole piece for minimum compression
- Vented cast aluminum chassis for optimum strength and low compression
- Low damping rubber surround for improved dynamic linearity
- Non-conducting fiber glass voice coil former for minimum damping
- Large motor system
Product Specifications
| Nominal Impedance | 6 ohms |
| DC resistance, Re | 4.6 ohms |
| voice coil inductance, Le | 2.1 mH |
| Free air resonance,Fs | 18.4 Hz |
| Sensitivity(2.83V/1m) | 93dB |
| Mechanical Q-factor,Qms | 7.4 |
| Electrical Q-factor,Qes | 0.32 |
| Total Q-factor,Qts | 0.31 |
| Moving mass incl. air,Mms | 166g |
| Force factor,BI | 16.7Tm |
| Equivalent volume,Vas | 462 liters |
| Compliance,Cms | 0.45mm/N |
| Mechanical loss,Rms | 2.6 Kg/s |
| Rated power handling* | 300W |
| Effective piston area,Sd | 850 cm² |
| Voice coil diameter | 75.6 mm |
| Voice coil height | 31 mm |
| Air gap height | 8 mm |
| Linear coil travel(p-p) | 23 mm |
| Magnetic flux density | 1.1 T |
| Magnetic weight | 3.6 Kg |
| Net weight | 10.2 Kg |
Frequency and Impedance Graph:
Drawing:
Possible box alignments:
- Sealed box of 3.0 cubic feet with stuffing has and F3 of 45Hz and F6 of 34Hz
- Vented box of 5.0 cubic feet with stuffing and 4" diameter vent by 7" long has an F3 of 32Hz