12″ / 300 mm
Nominal diameter
45 Hz
Resonance
0.25
Q factor
96 dB
Sensitivity
± 7.5 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.9
dB
Frequency response
45 - 3150
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
7.90
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
7.5
mm
Maximum excursion before damage
xlim
21.5
mm
Air volume displaced at xmax
VD
400
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
77
mm
Winding height
HVC
18.5
mm
Winding material
Aluminium
Former material
Glass Fiber
Magnet
Flux density
B
1.2
T
Force factor
Bl
16.3
N/A
Motor constant
Bl/√RE
8.97
N/√W
Air gap height
HAG
10.5
mm
Material
Ferrite Ring
Diaphragm
Effective diameter
261
mm
Effective area
SD
533
cm²
Moving mass
MMS
66
g
Moving mass (without air load)
MMD
57.2
g
Suspensions
Stiffness
KMS
5.26
N/mm
Compliance
CMS
190
µm/N
Equivalent volume to the compliance
VAS
75.2
L
Mechanical resistance
RMS
2.4
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
316
mm
Baffle cutout diameter
282
mm
Overall depth
140
mm
Flange thickness
12
mm
Mounting depth
128
mm
Volume occupied by the driver
2.9
L
Net weight
7.8
kg
Frame material
Aluminium
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fS
46 Hz
SD
515 cm²
50 - 3000 Hz
QTS
0.24
xmax
7.8 mm
SPL1W
96 dB
Bl/√RE
8.58
Pmax
900 W
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12″Subwoofer
fS
47 Hz
SD
515 cm²
50 - 2500 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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fS
45 Hz
SD
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45 - 4000 Hz
QTS
0.22
xmax
7.3 mm
SPL1W
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Bl/√RE
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Pmax
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