Eighteen Sound 18NLW9601 8Ω

Subwoofer

18″ / 462 mm
Nominal diameter
39 Hz
Resonance
0.28
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
94.9
dB
Frequency response
30 - 2300
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
5.70
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.28

Large signal parameters

Maximum linear excursion
xmax
14.0
mm
Air volume displaced at xmax
VD
1582
cm³
Power handling
P
1800
W
Program power
Pmax
3600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
4.7
Ω
Inductance (1kHz)
LE
2.19
mH
VC Diameter
135
mm
Winding material
Aluminum

Magnet

Force factor
Bl
31.0
N/A
Motor constant
Bl/√RE
14.3
N/√W
Material
Neodymium

Diaphragm

Effective diameter
379
mm
Effective area
SD
1130
cm²
Moving mass
MMS
255
g
Moving mass (without air load)
MMD
227.7
g
Material
Water,UV repellent

Suspensions

Stiffness
KMS
15.39
N/mm
Compliance
CMS
65
µm/N
Equivalent volume to the compliance
VAS
120
L
Mechanical resistance
RMS
10.96
N·s/m

Dimensions

Nominal diameter
18
462
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
236
mm
Flange thickness
26
mm
Mounting depth
210
mm
Volume occupied by the driver (estimated)
7.7
L
Net weight
12.8
kg
Eighteen Sound 18NLW9601 8Ω Impedance
Eighteen Sound 18NLW9601 8Ω SPL
Eighteen Sound 18NLW9601 8Ω Dimensions

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