SB Acoustics SB20FRPC30-8
8Ω
Full-range
| Nominal diameter | 8″ / 203 mm |
| Resonance | 39.4 Hz |
| Q factor | 0.45 |
| Sensitivity | 91.6 dB |
| Linear excursion | ± 4.1 mm |
| Program Power | 80 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 91.6dB
Thiele & Small parameters
- Resonance frequency (free air) fS 39.4Hz
- Mechanical quality factor QMS 10.10
- Electrical quality factor QES 0.47
- Total quality factor QTS 0.45
Large signal parameters
- Maximum linear excursion xmax 4.1mm
- Air volume displaced at xmax VD 89cm³
- Power handling P 40W
- Program power Pmax 80W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.0Ω
- Inductance (1kHz) LE 0.22mH
- VC Diameter 30.5mm
- Winding height HVC 13.2mm
Magnet
- Flux density B 1.2T
- Force factor Bl 7.15N/A
- Motor constant Bl/√RE 2.92N/√W
- Air gap height HAG 5mm
- Weight 0.54kg
Diaphragm
- Effective diameter 166mm
- Effective area SD 216cm²
- Moving mass MMS 16.3g
- Moving mass (without air load) MMD 14g
- Material Natural fibers (made in-house)
Suspensions
- Stiffness KMS 1N/mm
- Compliance CMS 1000µm/N
- Equivalent volume to the compliance VAS 66.3L
- Mechanical resistance RMS 0.4N·s/m
- Surround material Foam
Dimensions
- Nominal diameter 8″
- 203mm
- Volume occupied by the driver (estimated) 0.58L
- Net weight 1.43kg
- 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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