Eighteen Sound 18NLS4000
Subwoofer
18″ / 462 mm
Nominal diameter
27 Hz
Resonance
0.35
Q factor
91 dB
Sensitivity
± 22.3 mm
Linear excursion
2400 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 91.4
- dB
- Frequency response
- 28 - 500
- Hz
- Resonance frequency (free air)
- fS
- 27.0
- Hz
- Mechanical quality factor
- QMS
- 13.70
- Electrical quality factor
- QES
- 0.36
- Total quality factor
- QTS
- 0.35
- Maximum linear excursion
- xmax
- 22.3
- mm
- Air volume displaced at xmax
- VD
- 2732
- cm³
- Power handling
- P
- 1200
- W
- Program power
- Pmax
- 2400
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 2.9
- Ω
- Inductance (1kHz)
- LE
- 2.6
- mH
- VC Diameter
- 100
- mm
- Winding height
- HVC
- 52
- mm
- Force factor
- Bl
- 24.2
- N/A
- Motor constant
- Bl/√RE
- 14.2
- N/√W
- Air gap height
- HAG
- 15
- mm
- Effective diameter
- 395
- mm
- Effective area
- SD
- 1225
- cm²
- Moving mass
- MMS
- 433
- g
- Moving mass (without air load)
- MMD
- 403.3
- g
- Stiffness
- KMS
- 12.5
- N/mm
- Compliance
- CMS
- 80
- µm/N
- Equivalent volume to the compliance
- VAS
- 168
- L
- Mechanical resistance
- RMS
- 5.36
- N·s/m
- Nominal diameter
- 18
- ″
- 462
- mm
- Overall diameter
- 462
- mm
- Baffle cutout diameter
- 422
- mm
- Overall depth
- 250
- mm
- Flange thickness
- 24
- mm
- Mounting depth
- 226
- mm
- Volume occupied by the driver (estimated)
- 7.6
- L
- Net weight
- 12.0
- 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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