Eighteen Sound 18NLW4000

Subwoofer

18″ / 462 mm
Nominal diameter
34 Hz
Resonance
0.33
Q factor
94 dB
Sensitivity
± 15 mm
Linear excursion
3200 W
Program Power
Eighteen Sound 18NLW4000 SubwooferEighteen Sound 18NLW4000 Subwoofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
93.6
dB
Frequency response
30 - 1800
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.0
Hz
Mechanical quality factor
QMS
22.00
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
15.0
mm
Air volume displaced at xmax
VD
1695
cm³
Power handling
P
1500
W
Program power
Pmax
3200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
4.9
Ω
Inductance (1kHz)
LE
2.8
mH
VC Diameter
100
mm
Winding material
Copper

Magnet

Force factor
Bl
30.0
N/A
Motor constant
Bl/√RE
13.6
N/√W
Material
Neodymium

Diaphragm

Effective diameter
379
mm
Effective area
SD
1130
cm²
Moving mass
MMS
290
g
Moving mass (without air load)
MMD
262.7
g
Material
Water,UV repellent

Suspensions

Stiffness
KMS
13.16
N/mm
Compliance
CMS
76
µm/N
Equivalent volume to the compliance
VAS
135
L
Mechanical resistance
RMS
2.82
N·s/m

Dimensions

Nominal diameter
18
″
462
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
227
mm
Flange thickness
26
mm
Mounting depth
201
mm
Volume occupied by the driver (estimated)
6.3
L
Net weight
9.8
kg
Impedance
SPL
Eighteen Sound 18NLW4000 Impedance
Eighteen Sound 18NLW4000 SPL
Eighteen Sound 18NLW4000 Dimensions
DatasheetDatasheet

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