18″ / 462 mm
Nominal diameter
31 Hz
Resonance
0.34
Q factor
93 dB
Sensitivity
± 15 mm
Linear excursion
3000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.4
dB
Frequency response
30 - 800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
11.20
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
15.0
mm
Air volume displaced at xmax
VD
1838
cm³
Power handling
P
1500
W
Program power
Pmax
3000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
4.9
Ω
Inductance (1kHz)
LE
2.29
mH
VC Diameter
100
mm
Winding material
Copper
Magnet
Force factor
Bl
29.0
N/A
Motor constant
Bl/√RE
13.1
N/√W
Material
Neodymium
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
307
g
Moving mass (without air load)
MMD
277.3
g
Material
Weather protected
Suspensions
Stiffness
KMS
11.63
N/mm
Compliance
CMS
86
µm/N
Equivalent volume to the compliance
VAS
180
L
Mechanical resistance
RMS
5.34
N·s/m
Dimensions
Nominal diameter
18
″
462
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
232
mm
Flange thickness
23
mm
Mounting depth
209
mm
Volume occupied by the driver (estimated)
6.5
L
Net weight
10.0
kg
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Export this driver to a simulation software:
WinISD
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QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Eighteen Sound 18NLW4100 8Ω
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18″Subwoofer
fS
32 Hz
SD
1225 cm²
30 - 2000 Hz
QTS
0.35
xmax
12.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3600 W
.png.webp)
RCF LF18N4088 Ω
18″Subwoofer
fS
30 Hz
SD
1220 cm²
25 - 1000 Hz
QTS
0.33
xmax
15.0 mm
SPL1W
93 dB
Bl/√RE
12
Pmax
3000 W
.png.webp)
18″Subwoofer
fS
33 Hz
SD
1210 cm²
35 - 1000 Hz
QTS
0.32
xmax
12.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3000 W