Fostex FE108EΣ
8Ω
Full-range
| Nominal diameter | 4″ / 100 mm |
| Resonance | 77 Hz |
| Q factor | 0.30 |
| Sensitivity | 91.7 dB |
| Linear excursion | ± 0.3 mm |
| Program Power | 24 W |
Discontinued
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 91.7dB
- Frequency response 77 - 23000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 77Hz
- Mechanical quality factor QMS 7.79
- Electrical quality factor QES 0.32
- Total quality factor QTS 0.30
Large signal parameters
- Maximum linear excursion xmax 0.3mm
- Air volume displaced at xmax VD 1.4cm³
- Power handling P 8W
- Program power Pmax 24W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.8Ω
- Inductance (1kHz) LE 0.038mH
- VC Diameter 20mm
Magnet
- Force factor Bl 5.2N/A
- Motor constant Bl/√RE 1.99N/√W
- Weight 0.4kg
- Material Ferrite
Diaphragm
- Effective diameter 80mm
- Effective area SD 50cm²
- Moving mass MMS 2.7g
- Moving mass (without air load) MMD 2.4g
Suspensions
- Stiffness KMS 0.629N/mm
- Compliance CMS 1590µm/N
- Equivalent volume to the compliance VAS 5.7L
- Mechanical resistance RMS 0.17N·s/m
Dimensions
- Nominal diameter 4″
- 100mm
- Overall diameter 128mm
- Baffle cutout diameter 100mm
- Overall depth 65mm
- Volume occupied by the driver (estimated) 0.32L
- Net weight 1.2kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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