15″ / 381 mm
Nominal diameter
41 Hz
Resonance
0.39
Q factor
91 dB
Sensitivity
± 15 mm
Linear excursion
1500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.5
dB
Frequency response
30 - 400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
41.0
Hz
Mechanical quality factor
QMS
4.20
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
15.0
mm
Air volume displaced at xmax
VD
1206
cm³
Power handling
P
1000
W
Program power
Pmax
1500
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.9
Ω
Inductance (1kHz, in series, estimated)
LE
1.74
mH
VC Diameter
64
mm
Magnet
Force factor (in series)
Bl
26.3
N/A
Motor constant
Bl/√RE
13.3
N/√W
Diameter
196
mm
Diaphragm
Effective diameter
320
mm
Effective area
SD
804
cm²
Moving mass
MMS
293
g
Moving mass (without air load)
MMD
276.9
g
Suspensions
Stiffness
KMS
20.0
N/mm
Compliance
CMS
50
µm/N
Equivalent volume to the compliance
VAS
46.7
L
Mechanical resistance
RMS
17.97
N·s/m
Dimensions
Nominal diameter
15
″
381
mm
Baffle cutout diameter
355
mm
Mounting depth
199
mm
Volume occupied by the driver
4.8
L
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fS
42 Hz
SD
804 cm²
30 - 400 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
12
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fS
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SD
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42 Hz
SD
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45 - 2500 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
9.08
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