Cerwin Vega VPRO124D

2x2Ω
2x4Ω

Subwoofer

12″ / 320 mm
Nominal diameter
29 Hz
Resonance
0.65
Q factor
83 dB
Sensitivity
± 18.2 mm
Linear excursion
1500 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
83.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
29.2
Hz
Mechanical quality factor
QMS
9.50
Electrical quality factor
QES
0.69
Total quality factor
QTS
0.65

Large signal parameters

Maximum linear excursion
xmax
18.2
mm
Air volume displaced at xmax
VD
892
cm³
Power handling
P
750
W
Program power
Pmax
1500
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series, estimated)
LE
2.59
mH

Magnet

Force factor (in series)
Bl
20.4
N/A
Motor constant
Bl/√RE
8.06
N/√W
Diameter
165
mm

Diaphragm

Effective diameter
250
mm
Effective area
SD
490
cm²
Moving mass
MMS
250.3
g
Moving mass (without air load)
MMD
242.2
g

Suspensions

Stiffness
KMS
3.85
N/mm
Compliance
CMS
260
µm/N
Equivalent volume to the compliance
VAS
40.9
L
Mechanical resistance
RMS
4.83
N·s/m

Dimensions

Nominal diameter
12
320
mm
Overall diameter
320
mm
Baffle cutout diameter
272
mm
Mounting depth
152
mm
Volume occupied by the driver
2.29
L
Cerwin Vega VPRO124D Dimensions

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