12″ / 319 mm
Nominal diameter
39 Hz
Resonance
0.83
Q factor
86 dB
Sensitivity
± 8.8 mm
Linear excursion
700 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.3
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
38.6
Hz
Mechanical quality factor
QMS
5.00
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.83
Large signal parameters
Maximum linear excursion
xmax
8.8
mm
Air volume displaced at xmax
VD
475
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.0
Ω
Inductance (1kHz, in series, estimated)
LE
1.86
mH
Magnet
Force factor (in series)
Bl
15.3
N/A
Motor constant
Bl/√RE
6.25
N/√W
Diaphragm
Effective diameter
262
mm
Effective area
SD
540
cm²
Moving mass
MMS
162
g
Moving mass (without air load)
MMD
153
g
Suspensions
Stiffness
KMS
9.52
N/mm
Compliance
CMS
105
µm/N
Equivalent volume to the compliance
VAS
43
L
Mechanical resistance
RMS
7.86
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
Similar subwoofers to Cerwin Vega VPS124D
12″Shallow Subwoofer
fS
38 Hz
SD
540 cm²
QTS
0.72
xmax
7.9 mm
SPL1W
87 dB
Bl/√RE
6.89
Pmax
700 W
15″Subwoofer
fS
36 Hz
SD
779 cm²
36 - 400 Hz
QTS
0.79
xmax
24.0 mm
SPL1W
87 dB
Bl/√RE
7.08
Pmax
2500 W
10″Subwoofer
fS
36 Hz
SD
360 cm²
QTS
0.72
xmax
13.2 mm
SPL1W
86 dB
Bl/√RE
5.38
Pmax
500 W