Fostex FE108EΣ
Full-range
4″ / 100 mm
Nominal diameter
77 Hz
Resonance
0.3
Q factor
92 dB
Sensitivity
± 0.28 mm
Linear excursion
24 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 91.7
- dB
- Frequency response
- 77 - 23000
- Hz
- Resonance frequency (free air)
- fS
- 77.0
- Hz
- Mechanical quality factor
- QMS
- 7.79
- Electrical quality factor
- QES
- 0.32
- Total quality factor
- QTS
- 0.30
- Maximum linear excursion
- xmax
- 0.28
- mm
- Air volume displaced at xmax
- VD
- 1.4
- cm³
- Power handling
- P
- 8
- W
- Program power
- Pmax
- 24
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.8
- Ω
- Inductance (1kHz)
- LE
- 0.04
- mH
- VC Diameter
- 20
- mm
- Force factor
- Bl
- 5.2
- N/A
- Motor constant
- Bl/√RE
- 1.99
- N/√W
- Weight
- 0.4
- kg
- Material
- Ferrite
- Effective diameter
- 80
- mm
- Effective area
- SD
- 50
- cm²
- Moving mass
- MMS
- 2.7
- g
- Moving mass (without air load)
- MMD
- 2.4
- g
- Stiffness
- KMS
- 0.63
- N/mm
- Compliance
- CMS
- 1590
- µm/N
- Equivalent volume to the compliance
- VAS
- 5.7
- L
- Mechanical resistance
- RMS
- 0.17
- N·s/m
- Nominal diameter
- 4
- ″
- 100
- mm
- Overall diameter
- 128
- mm
- Baffle cutout diameter
- 100
- mm
- Overall depth
- 65
- mm
- Volume occupied by the driver (estimated)
- 0.32
- L
- Net weight
- 1.2
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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