Fostex FF85WK
Full-range
3.2″ / 80 mm
Nominal diameter
115 Hz
Resonance
0.55
Q factor
86 dB
Sensitivity
± 0.35 mm
Linear excursion
15 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 86.0
- dB
- Frequency response
- 115 - 28000
- Hz
- Resonance frequency (free air)
- fS
- 115
- Hz
- Mechanical quality factor
- QMS
- 3.30
- Electrical quality factor
- QES
- 0.68
- Total quality factor
- QTS
- 0.55
- Maximum linear excursion
- xmax
- 0.35
- mm
- Air volume displaced at xmax
- VD
- 1.0
- cm³
- Power handling
- P
- 5
- W
- Program power
- Pmax
- 15
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 7.2
- Ω
- Inductance (1kHz)
- LE
- 0.03
- mH
- VC Diameter
- 16
- mm
- Force factor
- Bl
- 3.93
- N/A
- Motor constant
- Bl/√RE
- 1.46
- N/√W
- Weight
- 0.187
- kg
- Effective diameter
- 60
- mm
- Effective area
- SD
- 28
- cm²
- Moving mass
- MMS
- 2
- g
- Moving mass (without air load)
- MMD
- 1.9
- g
- Stiffness
- KMS
- 1.1
- N/mm
- Compliance
- CMS
- 909
- µm/N
- Equivalent volume to the compliance
- VAS
- 1.04
- L
- Mechanical resistance
- RMS
- 0.44
- N·s/m
- Nominal diameter
- 3.2
- ″
- 80
- mm
- Overall diameter
- 83
- mm
- Baffle cutout diameter
- 73
- mm
- Overall depth
- 47
- mm
- Volume occupied by the driver (estimated)
- 0.1
- L
- Net weight
- 0.45
- 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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