SB Acoustics SB20PFC30-8
4Ω
8Ω
Woofer
8″ / 203 mm
Nominal diameter
34 Hz
Resonance
0.37
Q factor
89 dB
Sensitivity
± 5.65 mm
Linear excursion
100 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 89.3
- dB
- Resonance frequency (free air)
- fS
- 34.0
- Hz
- Mechanical quality factor
- QMS
- 2.66
- Electrical quality factor
- QES
- 0.43
- Total quality factor
- QTS
- 0.37
- Maximum linear excursion
- xmax
- 5.65
- mm
- Air volume displaced at xmax
- VD
- 122
- cm³
- Power handling
- P
- 50
- W
- Program power
- Pmax
- 100
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.6
- Ω
- Inductance (1kHz)
- LE
- 0.84
- mH
- VC Diameter
- 31
- mm
- Winding height
- HVC
- 16.3
- mm
- Flux density
- B
- 1.2
- T
- Force factor
- Bl
- 7.7
- N/A
- Motor constant
- Bl/√RE
- 3.25
- N/√W
- Air gap height
- HAG
- 5
- mm
- Weight
- 0.54
- kg
- Effective diameter
- 166
- mm
- Effective area
- SD
- 216
- cm²
- Moving mass
- MMS
- 21.2
- g
- Moving mass (without air load)
- MMD
- 18.9
- g
- Stiffness
- KMS
- 1.0
- N/mm
- Compliance
- CMS
- 1000
- µm/N
- Equivalent volume to the compliance
- VAS
- 66.2
- L
- Mechanical resistance
- RMS
- 1.7
- N·s/m
- Nominal diameter
- 8
- ″
- 203
- mm
- Volume occupied by the driver (estimated)
- 0.58
- L
- Net weight
- 1.43
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
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Export this driver to a simulation software:
Closed Box Simulator·
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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