12″ / 300 mm
Nominal diameter
55 Hz
Resonance
0.27
Q factor
95 dB
Sensitivity
± 9 mm
Linear excursion
1400 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
95.1
dB
Frequency response
55 - 3150
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
9.40
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Maximum excursion before damage
xlim
16.0
mm
Air volume displaced at xmax
VD
480
cm³
Power handling
P
700
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
100
mm
Winding height
HVC
22
mm
Winding material
Aluminium
Former material
Glass Fiber
Magnet
Flux density
B
1.3
T
Force factor
Bl
24.3
N/A
Motor constant
Bl/√RE
10.4
N/√W
Air gap height
HAG
12
mm
Diaphragm
Effective diameter
261
mm
Effective area
SD
533
cm²
Moving mass
MMS
86
g
Moving mass (without air load)
MMD
77.2
g
Suspensions
Stiffness
KMS
10.0
N/mm
Compliance
CMS
100
µm/N
Equivalent volume to the compliance
VAS
38.6
L
Mechanical resistance
RMS
3.2
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
316
mm
Baffle cutout diameter
284
mm
Overall depth
156
mm
Flange thickness
12
mm
Mounting depth
144
mm
Volume occupied by the driver
2.8
L
Net weight
5.8
kg
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fS
55 Hz
SD
500 cm²
45 - 2500 Hz
QTS
0.26
xmax
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SPL1W
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Bl/√RE
9.68
Pmax
1400 W
12″Woofer
fS
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SD
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QTS
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fS
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SD
500 cm²
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QTS
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xmax
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SPL1W
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Bl/√RE
9.68
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