Cerwin Vega VPS122D
2x2Ω
2x4ΩShallow Subwoofer
12″ / 319 mm
Nominal diameter
38 Hz
Resonance
0.72
Q factor
87 dB
Sensitivity
± 7.9 mm
Linear excursion
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.7
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
5.50
Electrical quality factor
QES
0.83
Total quality factor
QTS
0.72
Large signal parameters
Maximum linear excursion
xmax
7.9
mm
Air volume displaced at xmax
VD
427
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.4
Ω
Inductance (1kHz, in series, estimated)
LE
1.07
mH
Magnet
Force factor (in series)
Bl
12.7
N/A
Motor constant
Bl/√RE
6.89
N/√W
Diaphragm
Effective diameter
262
mm
Effective area
SD
540
cm²
Moving mass
MMS
166.8
g
Moving mass (without air load)
MMD
157.8
g
Suspensions
Stiffness
KMS
9.52
N/mm
Compliance
CMS
105
µm/N
Equivalent volume to the compliance
VAS
43
L
Mechanical resistance
RMS
7.24
N·s/m
Dimensions
Nominal diameter
12
″
319
mm
Overall diameter
319
mm
Baffle cutout diameter
280
mm
Mounting depth
94
mm
Volume occupied by the driver
0.93
L
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fS
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SD
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QTS
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xmax
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SPL1W
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Bl/√RE
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Pmax
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SD
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SD
779 cm²
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QTS
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xmax
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SPL1W
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Bl/√RE
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