Eighteen Sound 8M400F
Woofer
8″ / 210 mm
Nominal diameter
89 Hz
Resonance
0.26
Q factor
97 dB
Sensitivity
± 3 mm
Linear excursion
320 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 96.5
- dB
- Frequency response
- 200 - 9000
- Hz
- Resonance frequency (free air)
- fS
- 89.0
- Hz
- Mechanical quality factor
- QMS
- 4.03
- Electrical quality factor
- QES
- 0.28
- Total quality factor
- QTS
- 0.26
- Maximum linear excursion
- xmax
- 3.0
- mm
- Air volume displaced at xmax
- VD
- 68
- cm³
- Power handling
- P
- 250
- W
- Program power
- Pmax
- 320
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.1
- Ω
- Inductance (1kHz)
- LE
- 0.7
- mH
- VC Diameter
- 51
- mm
- Force factor
- Bl
- 13.1
- N/A
- Motor constant
- Bl/√RE
- 5.8
- N/√W
- Effective diameter
- 170
- mm
- Effective area
- SD
- 227
- cm²
- Moving mass
- MMS
- 16.9
- g
- Moving mass (without air load)
- MMD
- 14.4
- g
- Stiffness
- KMS
- 5.29
- N/mm
- Compliance
- CMS
- 189
- µm/N
- Equivalent volume to the compliance
- VAS
- 13.7
- L
- Mechanical resistance
- RMS
- 2.35
- N·s/m
- Nominal diameter
- 8
- ″
- 210
- mm
- Overall diameter
- 210
- mm
- Baffle cutout diameter
- 186
- mm
- Overall depth
- 106
- mm
- Flange thickness
- 15
- mm
- Mounting depth
- 91
- mm
- Volume occupied by the driver (estimated)
- 1.5
- L
- Net weight
- 4.9
- 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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