12″ / 320 mm
Nominal diameter
45 Hz
Resonance
0.24
Q factor
96 dB
Sensitivity
± 5.5 mm
Linear excursion
700 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.2
dB
Frequency response
45 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
12.20
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
301
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
1.4
mH
VC Diameter
75
mm
Winding material
Copper
Former material
Kapton
Magnet
Force factor
Bl
15.6
N/A
Motor constant
Bl/√RE
8.46
N/√W
Air gap height
HAG
10
mm
Material
Ferrite
Diaphragm
Effective diameter
264
mm
Effective area
SD
547
cm²
Moving mass
MMS
61
g
Moving mass (without air load)
MMD
52
g
Material
Treated Cellulose
Suspensions
Stiffness
KMS
4.79
N/mm
Compliance
CMS
209
µm/N
Equivalent volume to the compliance
VAS
89
L
Mechanical resistance
RMS
1.41
N·s/m
Surround material
Fabric
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
133
mm
Flange thickness
13
mm
Mounting depth
120
mm
Volume occupied by the driver (estimated)
2.2
L
Frame material
Aluminium
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