12″ / 305 mm
Nominal diameter
90 Hz
Resonance
0.65
Q factor
100 dB
Sensitivity
± 1.27 mm
Linear excursion
250 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
100.1
dB
Frequency response
80 - 5000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
90.0
Hz
Mechanical quality factor
QMS
11.29
Electrical quality factor
QES
0.69
Total quality factor
QTS
0.65
Large signal parameters
Maximum linear excursion
xmax
1.27
mm
Air volume displaced at xmax
VD
66
cm³
Power handling
P
125
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.42
mH
VC Diameter
51
mm
Magnet
Force factor
Bl
12.8
N/A
Motor constant
Bl/√RE
4.77
N/√W
Air gap height
HAG
7.1
mm
Weight
0.113
kg
Diaphragm
Effective diameter
257
mm
Effective area
SD
520
cm²
Moving mass
MMS
28
g
Moving mass (without air load)
MMD
19.7
g
Suspensions
Stiffness
KMS
9.09
N/mm
Compliance
CMS
110
µm/N
Equivalent volume to the compliance
VAS
43.3
L
Mechanical resistance
RMS
1.4
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
306
mm
Baffle cutout diameter
281
mm
Overall depth
129
mm
Volume occupied by the driver
1.67
L
Net weight
1.86
kg
Frame material
Pressed steel
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fS
89 Hz
SD
520 cm²
80 - 5200 Hz
QTS
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xmax
1.6 mm
SPL1W
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Bl/√RE
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Pmax
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fS
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SD
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xmax
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4.94
Pmax
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fS
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SD
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QTS
0.61
xmax
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Bl/√RE
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Pmax
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