12″ / 300 mm
Nominal diameter
45 Hz
Resonance
1.17
Q factor
88 dB
Sensitivity
± 11 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.0
dB
Frequency response
20 - 125
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
9.64
Electrical quality factor
QES
1.31
Total quality factor
QTS
1.17
Large signal parameters
Maximum linear excursion
xmax
11.0
mm
Air volume displaced at xmax
VD
557
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
1.29
mH
VC Diameter
48
mm
Winding height
HVC
32
mm
Winding material
Copper
Magnet
Flux density
B
0.8425
T
Force factor
Bl
9.6
N/A
Motor constant
Bl/√RE
5.45
N/√W
Air gap height
HAG
10
mm
Weight
1.24
kg
Material
Ferrite
Diaphragm
Effective diameter
254
mm
Effective area
SD
506
cm²
Moving mass
MMS
133
g
Moving mass (without air load)
MMD
124.5
g
Material
IMPP
Suspensions
Stiffness
KMS
10.64
N/mm
Compliance
CMS
94
µm/N
Equivalent volume to the compliance
VAS
34.1
L
Mechanical resistance
RMS
3.89
N·s/m
Surround material
Urethane
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
324
mm
Baffle cutout diameter
278
mm
Overall depth
165
mm
Flange thickness
17
mm
Mounting depth
148
mm
Volume occupied by the driver
1.75
L
Net weight
4.5
kg
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fS
43 Hz
SD
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20 - 125 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
6.73
Pmax
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SD
779 cm²
32 - 2300 Hz
QTS
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SPL1W
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