12″ / 320 mm
Nominal diameter
35 Hz
Resonance
0.42
Q factor
91 dB
Sensitivity
± 7.5 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.5
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
3.95
Electrical quality factor
QES
0.47
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
7.5
mm
Air volume displaced at xmax
VD
383
cm³
Power handling
P
350
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.0
Ω
Inductance (1kHz, in series)
LE
0.7
mH
VC Diameter
75
mm
Winding height
HVC
20
mm
Former material
Glass fiber
Magnet
Force factor (in series)
Bl
12.0
N/A
Motor constant
Bl/√RE
6.93
N/√W
Air gap height
HAG
10
mm
Diaphragm
Effective diameter
255
mm
Effective area
SD
511
cm²
Moving mass
MMS
95
g
Moving mass (without air load)
MMD
86.6
g
Material
Treated Cellulose
Suspensions
Stiffness
KMS
4.95
N/mm
Compliance
CMS
202
µm/N
Equivalent volume to the compliance
VAS
83
L
Mechanical resistance
RMS
5.29
N·s/m
Surround material
Rubber - Half Roll
Spider material
Nomex Fabric
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
135
mm
Flange thickness
15
mm
Mounting depth
120
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
7.05
kg
Frame material
Diecast Aluminium
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fS
35 Hz
SD
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35 - 4000 Hz
QTS
0.40
xmax
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SPL1W
90 dB
Bl/√RE
5.47
Pmax
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12″Subwoofer
fS
36 Hz
SD
491 cm²
35 - 2000 Hz
QTS
0.42
xmax
7.0 mm
SPL1W
90 dB
Bl/√RE
7.39
Pmax
800 W