Eighteen Sound 18NLW4500
4Ω
8ΩSubwoofer
18″ / 462 mm
Nominal diameter
37 Hz
Resonance
0.31
Q factor
95 dB
Sensitivity
± 14.75 mm
Linear excursion
3600 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 94.7
- dB
- Frequency response
- 30 - 1000
- Hz
- Resonance frequency (free air)
- fS
- 37.0
- Hz
- Mechanical quality factor
- QMS
- 10.80
- Electrical quality factor
- QES
- 0.32
- Total quality factor
- QTS
- 0.31
- Maximum linear excursion
- xmax
- 14.75
- mm
- Air volume displaced at xmax
- VD
- 1807
- cm³
- Power handling
- P
- 1800
- W
- Program power
- Pmax
- 3600
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.3
- Ω
- Inductance (1kHz)
- LE
- 1.59
- mH
- VC Diameter
- 115
- mm
- Winding height
- HVC
- 36
- mm
- Winding material
- Copper
- Force factor
- Bl
- 26.7
- N/A
- Motor constant
- Bl/√RE
- 14.7
- N/√W
- Air gap height
- HAG
- 13
- mm
- Material
- Neodymium
- Effective diameter
- 395
- mm
- Effective area
- SD
- 1225
- cm²
- Moving mass
- MMS
- 296
- g
- Moving mass (without air load)
- MMD
- 266.3
- g
- Material
- Weather protected
- Stiffness
- KMS
- 15.87
- N/mm
- Compliance
- CMS
- 63
- µm/N
- Equivalent volume to the compliance
- VAS
- 127
- L
- Mechanical resistance
- RMS
- 6.37
- N·s/m
- Nominal diameter
- 18
- ″
- 462
- mm
- Overall diameter
- 462
- mm
- Baffle cutout diameter
- 422
- mm
- Overall depth
- 233
- mm
- Flange thickness
- 23
- mm
- Mounting depth
- 210
- mm
- Volume occupied by the driver (estimated)
- 7.3
- 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:
Closed Box Simulator·
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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