12″ / 305 mm
Nominal diameter
28 Hz
Resonance
0.52
Q factor
86 dB
Sensitivity
± 15.9 mm
Linear excursion
1200 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
27.7
Hz
Mechanical quality factor
QMS
5.60
Electrical quality factor
QES
0.57
Total quality factor
QTS
0.52
Large signal parameters
Maximum linear excursion
xmax
15.9
mm
Air volume displaced at xmax
VD
906
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series)
LE
6.94
mH
VC Diameter
64
mm
Magnet
Force factor (in series)
Bl
22.7
N/A
Motor constant
Bl/√RE
8.97
N/√W
Weight
2.72
kg
Diaphragm
Effective diameter
269
mm
Effective area
SD
570
cm²
Moving mass
MMS
264.1
g
Moving mass (without air load)
MMD
255
g
Suspensions
Stiffness
KMS
8.0
N/mm
Compliance
CMS
125
µm/N
Equivalent volume to the compliance
VAS
57.7
L
Mechanical resistance
RMS
8.21
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Baffle cutout diameter
285
mm
Mounting depth
169
mm
Volume occupied by the driver
3.0
L
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fS
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SD
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QTS
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xmax
15.2 mm
SPL1W
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Bl/√RE
9.5
Pmax
1200 W
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Rockford Fosgate T1D2122 x 2 Ω
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fS
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SD
548 cm²
QTS
0.52
xmax
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SPL1W
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Bl/√RE
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