Cerwin Vega H4124D
Subwoofer
12″ / 323 mm
Nominal diameter
28 Hz
Resonance
0.5
Q factor
87 dB
Sensitivity
± 14 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.8
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
27.7
Hz
Mechanical quality factor
QMS
7.90
Electrical quality factor
QES
0.53
Total quality factor
QTS
0.50
Large signal parameters
Maximum linear excursion
xmax
14.0
mm
Air volume displaced at xmax
VD
686
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
9.2
Ω
Inductance (1kHz, in series, estimated)
LE
2.59
mH
Magnet
Force factor (in series)
Bl
20.5
N/A
Motor constant
Bl/√RE
6.76
N/√W
Diameter
165
mm
Diaphragm
Effective diameter
250
mm
Effective area
SD
490
cm²
Moving mass
MMS
139.2
g
Moving mass (without air load)
MMD
131
g
Suspensions
Stiffness
KMS
4.22
N/mm
Compliance
CMS
237
µm/N
Equivalent volume to the compliance
VAS
80.8
L
Mechanical resistance
RMS
3.07
N·s/m
Dimensions
Nominal diameter
12
″
323
mm
Overall diameter
323
mm
Baffle cutout diameter
259
mm
Mounting depth
136
mm
Volume occupied by the driver (estimated)
2.8
L
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SD
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SD
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