15″ / 380 mm
Nominal diameter
39 Hz
Resonance
0.37
Q factor
96 dB
Sensitivity
± 8 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.1
dB
Frequency response
50 - 4300
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
9.34
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
680
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
75
mm
Winding material
Aluminum
Magnet
Force factor
Bl
17.6
N/A
Motor constant
Bl/√RE
7.79
N/√W
Material
Ferrite
Diaphragm
Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
88
g
Moving mass (without air load)
MMD
70.5
g
Material
Weather protected
Suspensions
Stiffness
KMS
5.29
N/mm
Compliance
CMS
189
µm/N
Equivalent volume to the compliance
VAS
218
L
Mechanical resistance
RMS
2.31
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
393
mm
Baffle cutout diameter
354
mm
Overall depth
184
mm
Flange thickness
13
mm
Mounting depth
171
mm
Volume occupied by the driver (estimated)
4.3
L
Net weight
7.9
kg
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SpeakerbenchSimilar subwoofers to Eighteen Sound 15W750 8Ω
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15″Subwoofer
fS
39 Hz
SD
850 cm²
38 - 5000 Hz
QTS
0.32
xmax
6.5 mm
SPL1W
96 dB
Bl/√RE
7.54
Pmax
700 W
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15″Woofer
fS
40 Hz
SD
856 cm²
35 - 3500 Hz
QTS
0.37
xmax
6.9 mm
SPL1W
96 dB
Bl/√RE
7.73
Pmax
1200 W
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15″Subwoofer
fS
38 Hz
SD
850 cm²
38 - 5000 Hz
QTS
0.30
xmax
6.5 mm
SPL1W
97 dB
Bl/√RE
7.71
Pmax
700 W