Eighteen Sound 18NLW9000 8Ω

Subwoofer

18″ / 462 mm
Nominal diameter
34 Hz
Resonance
0.31
Q factor
95 dB
Sensitivity
± 14 mm
Linear excursion
3600 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.2
dB
Frequency response
32 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.0
Hz
Mechanical quality factor
QMS
7.00
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.31

Large signal parameters

Maximum linear excursion
xmax
14.0
mm
Air volume displaced at xmax
VD
1711
cm³
Power handling
P
1800
W
Program power
Pmax
3600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.9
mH
VC Diameter
135
mm

Magnet

Force factor
Bl
28.0
N/A
Motor constant
Bl/√RE
11.9
N/√W

Diaphragm

Effective diameter
394
mm
Effective area
SD
1222
cm²
Moving mass
MMS
218
g
Moving mass (without air load)
MMD
188.3
g

Suspensions

Stiffness
KMS
9.9
N/mm
Compliance
CMS
101
µm/N
Equivalent volume to the compliance
VAS
206
L
Mechanical resistance
RMS
6.65
N·s/m

Dimensions

Nominal diameter
18
462
mm
Overall diameter
462
mm
Baffle cutout diameter
422
mm
Overall depth
237
mm
Flange thickness
26
mm
Mounting depth
211
mm
Volume occupied by the driver (estimated)
7.6
L
Net weight
12.5
kg
Eighteen Sound 18NLW9000 8Ω Impedance
Eighteen Sound 18NLW9000 8Ω SPL
Eighteen Sound 18NLW9000 8Ω Dimensions

Export this driver to a simulation software:

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