SB Acoustics SB20PFCS30-7
7Ω
Woofer
| Nominal diameter | 8″ / 203 mm |
| Resonance | 39 Hz |
| Q factor | 0.66 |
| Sensitivity | 88.2 dB |
| Linear excursion | ± 5.5 mm |
| Program Power | 80 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 88.2dB
Thiele & Small parameters
- Resonance frequency (free air) fS 39Hz
- Mechanical quality factor QMS 4.50
- Electrical quality factor QES 0.77
- Total quality factor QTS 0.66
Large signal parameters
- Maximum linear excursion xmax 5.5mm
- Air volume displaced at xmax VD 122cm³
- Power handling P 40W
- Program power Pmax 80W
Voice Coil
- Nominal impedance Z 7Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.95mH
- VC Diameter 30.5mm
- Winding height HVC 16mm
Magnet
- Flux density B 0.91T
- Force factor Bl 5.6N/A
- Motor constant Bl/√RE 2.5N/√W
- Air gap height HAG 5mm
- Weight 0.36kg
Diaphragm
- Effective diameter 168mm
- Effective area SD 222cm²
- Moving mass MMS 19.6g
- Moving mass (without air load) MMD 17.2g
- Material Natural fibers (made in-house)
Suspensions
- Stiffness KMS 1.18N/mm
- Compliance CMS 850µm/N
- Equivalent volume to the compliance VAS 59.5L
- Mechanical resistance RMS 1.07N·s/m
- Surround material Foam
Dimensions
- Nominal diameter 8″
- 203mm
- Volume occupied by the driver (estimated) 0.38L
- Net weight 0.96kg
- Frame material Reinforced plastic
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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