Fountek FM135D-II
Mid-range
5.25″ / 135 mm
Nominal diameter
73 Hz
Resonance
0.28
Q factor
90 dB
Sensitivity
± 1.45 mm
Linear excursion
60 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 90.4
- dB
- Frequency response
- 73 - 5500
- Hz
- Resonance frequency (free air)
- fS
- 73.0
- Hz
- Mechanical quality factor
- QMS
- 1.84
- Electrical quality factor
- QES
- 0.33
- Total quality factor
- QTS
- 0.28
- Maximum linear excursion
- xmax
- 1.45
- mm
- Air volume displaced at xmax
- VD
- 12
- cm³
- Power handling
- P
- 30
- W
- Program power
- Pmax
- 60
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.3
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.29
- mH
- VC Diameter
- 36
- mm
- Winding height
- HVC
- 10
- mm
- Winding material
- Copper Clad Aluminium
- Former material
- Kapton
- Flux density
- B
- 1.0
- T
- Force factor
- Bl
- 7.96
- N/A
- Motor constant
- Bl/√RE
- 3.17
- N/√W
- Air gap height
- HAG
- 6
- mm
- Material
- Ferrite
- Effective diameter
- 103
- mm
- Effective area
- SD
- 83
- cm²
- Moving mass
- MMS
- 7.2
- g
- Moving mass (without air load)
- MMD
- 6.7
- g
- Stiffness
- KMS
- 1.52
- N/mm
- Compliance
- CMS
- 656
- µm/N
- Equivalent volume to the compliance
- VAS
- 6.48
- L
- Mechanical resistance
- RMS
- 1.8
- N·s/m
- Nominal diameter
- 5.25
- ″
- 135
- mm
- Overall diameter
- 132
- mm
- Overall depth
- 75
- mm
- Volume occupied by the driver (estimated)
- 0.47
- L
- Net weight
- 1.85
- 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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