Eighteen Sound 18W1300
Subwoofer
18″ / 460 mm
Nominal diameter
35 Hz
Resonance
0.33
Q factor
97 dB
Sensitivity
± 8.5 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.0
dB
Frequency response
38 - 3300
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
5.00
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
8.5
mm
Air volume displaced at xmax
VD
1041
cm³
Power handling
P
850
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
1.48
mH
VC Diameter
100
mm
Winding material
Aluminum
Magnet
Force factor
Bl
20.4
N/A
Motor constant
Bl/√RE
9.12
N/√W
Material
Ferrite
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
129
g
Moving mass (without air load)
MMD
99.3
g
Material
Weather protected
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
336
L
Mechanical resistance
RMS
5.67
N·s/m
Spider material
Double Silicon
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
211
mm
Flange thickness
26
mm
Mounting depth
185
mm
Volume occupied by the driver (estimated)
7.2
L
Net weight
13.0
kg
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