Eighteen Sound 18ND9300
Subwoofer
18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.28
Q factor
96 dB
Sensitivity
± 9.5 mm
Linear excursion
1400 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 95.7
- dB
- Frequency response
- 28 - 2500
- Hz
- Resonance frequency (free air)
- fS
- 30.0
- Hz
- Mechanical quality factor
- QMS
- 7.86
- Electrical quality factor
- QES
- 0.29
- Total quality factor
- QTS
- 0.28
- Maximum linear excursion
- xmax
- 9.5
- mm
- Maximum excursion before damage
- xlim
- 25.0
- mm
- Air volume displaced at xmax
- VD
- 1159
- cm³
- Power handling
- P
- 1000
- W
- Program power
- Pmax
- 1400
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.0
- Ω
- Inductance (1kHz)
- LE
- 2.02
- mH
- VC Diameter
- 100
- mm
- Winding material
- Copper
- Force factor
- Bl
- 24.4
- N/A
- Motor constant
- Bl/√RE
- 10.9
- N/√W
- Material
- Neodymium
- Effective diameter
- 394
- mm
- Effective area
- SD
- 1220
- cm²
- Moving mass
- MMS
- 184
- g
- Moving mass (without air load)
- MMD
- 154.4
- g
- Material
- Straight ribbed carbon fiber loaded cellulose
- Stiffness
- KMS
- 6.67
- N/mm
- Compliance
- CMS
- 150
- µm/N
- Equivalent volume to the compliance
- VAS
- 316
- L
- Mechanical resistance
- RMS
- 4.41
- N·s/m
- Surround material
- Triple roll, Polycotton
- Nominal diameter
- 18
- ″
- 460
- mm
- Overall diameter
- 462
- mm
- Baffle cutout diameter
- 422
- mm
- Overall depth
- 224
- mm
- Flange thickness
- 26
- mm
- Mounting depth
- 198
- mm
- Volume occupied by the driver (estimated)
- 5.3
- L
- Net weight
- 7.6
- 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
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Hornresp
QSpeakers
SpeakerSim
MfbLabs
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