18″ / 460 mm
Nominal diameter
31 Hz
Resonance
0.29
Q factor
96 dB
Sensitivity
± 9 mm
Linear excursion
1400 W
Program Power
.jpg)
.png)
.jpg)
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.6
dB
Frequency response
28 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
7.20
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Air volume displaced at xmax
VD
1103
cm³
Power handling
P
1000
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
2.3
mH
VC Diameter
100
mm
Winding material
Copper
Magnet
Force factor
Bl
24.7
N/A
Motor constant
Bl/√RE
11.0
N/√W
Material
Ferrite
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
190
g
Moving mass (without air load)
MMD
160.3
g
Material
Weather protected
Suspensions
Stiffness
KMS
7.19
N/mm
Compliance
CMS
139
µm/N
Equivalent volume to the compliance
VAS
297
L
Mechanical resistance
RMS
5.14
N·s/m
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
215
mm
Flange thickness
26
mm
Mounting depth
189
mm
Volume occupied by the driver (estimated)
7.4
L
Net weight
13.3
kg
.png)
.png)
.png)
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Eighteen Sound 18LW1400 8Ω
.jpg.webp)
18″Subwoofer
fS
30 Hz
SD
1220 cm²
28 - 2500 Hz
QTS
0.28
xmax
9.5 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
1400 W
.jpg.webp)
21″Subwoofer
fS
30 Hz
SD
1698 cm²
30 - 1000 Hz
QTS
0.27
xmax
10.5 mm
SPL1W
96 dB
Bl/√RE
16
Pmax
2000 W
.jpg.webp)
RCF LF18Y4888 Ω
18″Subwoofer
fS
33 Hz
SD
1200 cm²
30 - 1000 Hz
QTS
0.29
xmax
9.0 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
1800 W