15″ / 380 mm
Nominal diameter
34 Hz
Resonance
0.29
Q factor
94 dB
Sensitivity
± 9 mm
Linear excursion
1400 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.8
dB
Frequency response
42 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
34.0
Hz
Mechanical quality factor
QMS
7.84
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Air volume displaced at xmax
VD
765
cm³
Power handling
P
1000
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.7
Ω
Inductance (1kHz)
LE
0.58
mH
VC Diameter
100
mm
Magnet
Force factor
Bl
18.2
N/A
Motor constant
Bl/√RE
11.1
N/√W
Diaphragm
Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
172
g
Moving mass (without air load)
MMD
154.7
g
Suspensions
Stiffness
KMS
7.87
N/mm
Compliance
CMS
127
µm/N
Equivalent volume to the compliance
VAS
148
L
Mechanical resistance
RMS
4.69
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
387
mm
Baffle cutout diameter
353
mm
Overall depth
177
mm
Flange thickness
24
mm
Mounting depth
153
mm
Volume occupied by the driver (estimated)
3.9
L
Net weight
7.0
kg
Similar subwoofers to Eighteen Sound 15NLW9500
12″Subwoofer
fS
37 Hz
SD
545 cm²
46 - 2000 Hz
QTS
0.32
xmax
9.1 mm
SPL1W
93 dB
Bl/√RE
7.06
Pmax
900 W
12″Subwoofer
fS
36 Hz
SD
545 cm²
41 - 2000 Hz
QTS
0.31
xmax
9.1 mm
SPL1W
94 dB
Bl/√RE
7.24
Pmax
1100 W
15″Subwoofer
fS
34 Hz
SD
900 cm²
30 - 1500 Hz
QTS
0.29
xmax
12.0 mm
SPL1W
94 dB
Bl/√RE
11
Pmax
3000 W