Cerwin Vega SPRO152D
Subwoofer
15″ / 390 mm
Nominal diameter
22 Hz
Resonance
0.27
Q factor
88 dB
Sensitivity
± 33 mm
Linear excursion
5000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
22.0
Hz
Mechanical quality factor
QMS
2.30
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
33.0
mm
Air volume displaced at xmax
VD
2673
cm³
Power handling
P
2500
W
Program power
Pmax
5000
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
2.9
Ω
Inductance (1kHz, in series, estimated)
LE
1.56
mH
Magnet
Force factor (in series)
Bl
22.8
N/A
Motor constant
Bl/√RE
13.5
N/√W
Diaphragm
Effective diameter
321
mm
Effective area
SD
810
cm²
Moving mass
MMS
410
g
Moving mass (without air load)
MMD
393.5
g
Suspensions
Stiffness
KMS
7.81
N/mm
Compliance
CMS
128
µm/N
Equivalent volume to the compliance
VAS
118
L
Mechanical resistance
RMS
24.64
N·s/m
Dimensions
Nominal diameter
15
″
390
mm
Overall diameter
390
mm
Baffle cutout diameter
357
mm
Mounting depth
295
mm
Volume occupied by the driver
8.3
L
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15″Subwoofer
fS
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SD
810 cm²
QTS
0.32
xmax
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SPL1W
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Bl/√RE
15
Pmax
7000 W
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fS
28 Hz
SD
810 cm²
QTS
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xmax
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SPL1W
89 dB
Bl/√RE
15
Pmax
7000 W