18″ / 462 mm
Nominal diameter
32 Hz
Resonance
0.32
Q factor
93 dB
Sensitivity
± 17.5 mm
Linear excursion
4000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.4
dB
Frequency response
30 - 1800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
8.52
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
17.5
mm
Air volume displaced at xmax
VD
2023
cm³
Power handling
P
1800
W
Program power
Pmax
4000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.85
mH
VC Diameter
115
mm
Winding material
Aluminum
Magnet
Force factor
Bl
31.3
N/A
Motor constant
Bl/√RE
13.3
N/√W
Material
Neodymium
Diaphragm
Effective diameter
384
mm
Effective area
SD
1156
cm²
Moving mass
MMS
295
g
Moving mass (without air load)
MMD
267
g
Material
Water,UV repellent
Suspensions
Stiffness
KMS
11.91
N/mm
Compliance
CMS
84
µm/N
Equivalent volume to the compliance
VAS
176
L
Mechanical resistance
RMS
6.96
N·s/m
Dimensions
Nominal diameter
18
″
462
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
310
mm
Flange thickness
26
mm
Mounting depth
284
mm
Volume occupied by the driver (estimated)
8.8
L
Net weight
12.0
kg
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Export this driver to a simulation software:
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QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Eighteen Sound 18NTLW5000 8Ω
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18″Subwoofer
fS
32 Hz
SD
1225 cm²
35 - 1000 Hz
QTS
0.30
xmax
17.5 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
4000 W
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18″Subwoofer
fS
34 Hz
SD
1210 cm²
35 - 1500 Hz
QTS
0.30
xmax
14.0 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
3400 W
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18″Woofer
fS
32 Hz
SD
1158 cm²
30 - 1000 Hz
QTS
0.30
xmax
13.5 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3200 W