15″ / 381 mm
Nominal diameter
35 Hz
Resonance
0.63
Q factor
87 dB
Sensitivity
± 24 mm
Linear excursion
2500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.7
dB
Frequency response
35 - 400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
4.60
Electrical quality factor
QES
0.73
Total quality factor
QTS
0.63
Large signal parameters
Maximum linear excursion
xmax
24.0
mm
Air volume displaced at xmax
VD
1870
cm³
Power handling
P
1250
W
Program power
Pmax
2500
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.6
Ω
Inductance (1kHz, in series, estimated)
LE
1.9
mH
VC Diameter
76
mm
Magnet
Force factor (in series)
Bl
21.0
N/A
Motor constant
Bl/√RE
11.1
N/√W
Diameter
187
mm
Diaphragm
Effective diameter
315
mm
Effective area
SD
779
cm²
Moving mass
MMS
386.6
g
Moving mass (without air load)
MMD
371.1
g
Suspensions
Stiffness
KMS
18.87
N/mm
Compliance
CMS
53
µm/N
Equivalent volume to the compliance
VAS
46
L
Mechanical resistance
RMS
18.48
N·s/m
Dimensions
Nominal diameter
15
″
381
mm
Baffle cutout diameter
354
mm
Mounting depth
220
mm
Volume occupied by the driver
4.2
L
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12″Shallow Subwoofer
fS
34 Hz
SD
531 cm²
31 - 350 Hz
QTS
0.63
xmax
6.8 mm
SPL1W
86 dB
Bl/√RE
7.29
Pmax
600 W