12″ / 320 mm
Nominal diameter
26 Hz
Resonance
0.65
Q factor
84 dB
Sensitivity
± 17.3 mm
Linear excursion
900 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
84.1
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
26.4
Hz
Mechanical quality factor
QMS
8.00
Electrical quality factor
QES
0.71
Total quality factor
QTS
0.65
Large signal parameters
Maximum linear excursion
xmax
17.3
mm
Air volume displaced at xmax
VD
848
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series, estimated)
LE
2.15
mH
Magnet
Force factor (in series)
Bl
16.6
N/A
Motor constant
Bl/√RE
6.56
N/√W
Diameter
166
mm
Diaphragm
Effective diameter
250
mm
Effective area
SD
490
cm²
Moving mass
MMS
184.6
g
Moving mass (without air load)
MMD
176.5
g
Suspensions
Stiffness
KMS
2.38
N/mm
Compliance
CMS
420
µm/N
Equivalent volume to the compliance
VAS
62.3
L
Mechanical resistance
RMS
3.83
N·s/m
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
320
mm
Baffle cutout diameter
272
mm
Mounting depth
144
mm
Volume occupied by the driver (estimated)
2.7
L
Similar subwoofers to Cerwin Vega V124D
12″Subwoofer
fS
27 Hz
SD
490 cm²
QTS
0.65
xmax
17.3 mm
SPL1W
84 dB
Bl/√RE
6.67
Pmax
1300 W
15″Subwoofer
fS
28 Hz
SD
800 cm²
QTS
0.58
xmax
22.5 mm
SPL1W
86 dB
Bl/√RE
10
Pmax
1800 W
12″Subwoofer
fS
29 Hz
SD
490 cm²
QTS
0.65
xmax
18.2 mm
SPL1W
83 dB
Bl/√RE
8.06
Pmax
1500 W