12″ / 305 mm
Nominal diameter
37 Hz
Resonance
0.32
Q factor
93 dB
Sensitivity
± 9.1 mm
Linear excursion
900 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.4
dB
Frequency response
46 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
6.94
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
9.1
mm
Maximum excursion before damage
xlim
14.5
mm
Air volume displaced at xmax
VD
496
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.98
mH
VC Diameter
76
mm
Winding material
Copper
Former material
Kapton
Magnet
Force factor
Bl
16.7
N/A
Motor constant
Bl/√RE
7.06
N/√W
Air gap height
HAG
9.3
mm
Weight
0.312
kg
Material
Neodymium
Diaphragm
Effective diameter
264
mm
Effective area
SD
545
cm²
Moving mass
MMS
72
g
Moving mass (without air load)
MMD
63
g
Material
Treated paper
Suspensions
Stiffness
KMS
3.85
N/mm
Compliance
CMS
260
µm/N
Equivalent volume to the compliance
VAS
107
L
Mechanical resistance
RMS
2.41
N·s/m
Surround material
Sealed cloth
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
315
mm
Baffle cutout diameter
281
mm
Overall depth
152
mm
Volume occupied by the driver
1.56
L
Net weight
3.45
kg
Frame material
Die-cast aluminum
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fS
36 Hz
SD
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41 - 2000 Hz
QTS
0.31
xmax
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SPL1W
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Bl/√RE
7.24
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fS
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SD
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SPL1W
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Bl/√RE
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SD
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40 - 2500 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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