Celestion FTR12-4080HDX
Low frequency
12″ / 305 mm
Nominal diameter
61 Hz
Resonance
0.4
Q factor
92 dB
Sensitivity
± 8 mm
Linear excursion
2000 W
Program Power
Discontinued
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
91.5
dB
Frequency response
47 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
61.0
Hz
Mechanical quality factor
QMS
2.26
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.40
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
425
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
1.99
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Round copper
Former material
Glass fibre
Magnet
Force factor
Bl
24.63
N/A
Motor constant
Bl/√RE
10.1
N/√W
Air gap height
HAG
9.5
mm
Weight
3.1
kg
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
126.3
g
Moving mass (without air load)
MMD
117.6
g
Material
Glass loaded paper (weather-resistant)
Suspensions
Stiffness
KMS
20.0
N/mm
Compliance
CMS
50
µm/N
Equivalent volume to the compliance
VAS
21.5
L
Mechanical resistance
RMS
21.44
N·s/m
Surround material
Cloth-sealed
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
313
mm
Baffle cutout diameter
282
mm
Overall depth
158
mm
Volume occupied by the driver (estimated)
3.8
L
Net weight
9.6
kg
Frame material
Cast aluminium
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fS
64 Hz
SD
346 cm²
60 - 3500 Hz
QTS
0.45
xmax
6.4 mm
SPL1W
92 dB
Bl/√RE
7.08
Pmax
1600 W
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10″Woofer
fS
52 Hz
SD
363 cm²
50 - 4000 Hz
QTS
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xmax
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SPL1W
91 dB
Bl/√RE
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Pmax
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fS
65 Hz
SD
328 cm²
60 - 4000 Hz
QTS
0.42
xmax
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SPL1W
92 dB
Bl/√RE
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Pmax
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