15″ / 393 mm
Nominal diameter
35 Hz
Resonance
0.2
Q factor
95 dB
Sensitivity
± 14.5 mm
Linear excursion
3000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.8
dB
Frequency response
40 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
6.38
Electrical quality factor
QES
0.21
Total quality factor
QTS
0.20
Large signal parameters
Maximum linear excursion
xmax
14.5
mm
Air volume displaced at xmax
VD
1278
cm³
Power handling
P
1500
W
Program power
Pmax
3000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
115
mm
Magnet
Force factor
Bl
24.4
N/A
Motor constant
Bl/√RE
14.1
N/√W
Diaphragm
Effective diameter
335
mm
Effective area
SD
881
cm²
Moving mass
MMS
198
g
Moving mass (without air load)
MMD
179.8
g
Suspensions
Stiffness
KMS
9.62
N/mm
Compliance
CMS
104
µm/N
Equivalent volume to the compliance
VAS
126
L
Mechanical resistance
RMS
6.82
N·s/m
Dimensions
Nominal diameter
15
″
393
mm
Overall diameter
393
mm
Baffle cutout diameter
356
mm
Overall depth
199
mm
Flange thickness
15
mm
Mounting depth
184
mm
Volume occupied by the driver (estimated)
5.8
L
Net weight
11.4
kg
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SpeakerbenchSimilar subwoofers to Eighteen Sound 15NLW4500
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15″Subwoofer
fS
35 Hz
SD
855 cm²
35 - 1500 Hz
QTS
0.24
xmax
13.5 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3400 W
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15″Subwoofer
fS
34 Hz
SD
855 cm²
35 - 1500 Hz
QTS
0.22
xmax
13.5 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
3400 W
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15″Subwoofer
fS
33 Hz
SD
855 cm²
35 - 1500 Hz
QTS
0.22
xmax
9.0 mm
SPL1W
95 dB
Bl/√RE
12
Pmax
2000 W