Eighteen Sound 15W930
Subwoofer
15″ / 380 mm
Nominal diameter
33 Hz
Resonance
0.22
Q factor
97 dB
Sensitivity
± 7.5 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.8
dB
Frequency response
50 - 3600
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
8.78
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.22
Large signal parameters
Maximum linear excursion
xmax
7.5
mm
Air volume displaced at xmax
VD
638
cm³
Power handling
P
500
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.47
mH
VC Diameter
75
mm
Winding material
Copper
Magnet
Force factor
Bl
22.1
N/A
Motor constant
Bl/√RE
9.42
N/√W
Material
Ferrite
Diaphragm
Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
97
g
Moving mass (without air load)
MMD
79.5
g
Material
Weather protected
Suspensions
Stiffness
KMS
4.17
N/mm
Compliance
CMS
240
µm/N
Equivalent volume to the compliance
VAS
240
L
Mechanical resistance
RMS
2.29
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
393
mm
Baffle cutout diameter
360
mm
Overall depth
185
mm
Flange thickness
14
mm
Mounting depth
171
mm
Volume occupied by the driver (estimated)
4.4
L
Net weight
8.0
kg
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SD
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