Celestion FTR15-4080HDX

Low frequency

15″ / 381 mm
Nominal diameter
40 Hz
Resonance
0.32
Q factor
94 dB
Sensitivity
± 10.1 mm
Linear excursion
2000 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
94.1
dB
Frequency response
40 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
3.09
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.32

Large signal parameters

Maximum linear excursion
xmax
10.1
mm
Air volume displaced at xmax
VD
864
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.73
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Round copper
Former material
Glass fibre

Magnet

Force factor
Bl
23.07
N/A
Motor constant
Bl/√RE
10.2
N/√W
Air gap height
HAG
9.5
mm
Weight
3.1
kg
Material
Ferrite

Diaphragm

Effective diameter
330
mm
Effective area
SD
855
cm²
Moving mass
MMS
147.5
g
Moving mass (without air load)
MMD
130.1
g
Material
Glass loaded paper (weather-resistant)

Suspensions

Stiffness
KMS
9.09
N/mm
Compliance
CMS
110
µm/N
Equivalent volume to the compliance
VAS
111
L
Mechanical resistance
RMS
13.77
N·s/m
Surround material
Cloth-sealed

Dimensions

Nominal diameter
15
381
mm
Overall diameter
385
mm
Baffle cutout diameter
351
mm
Overall depth
180
mm
Volume occupied by the driver (estimated)
4.8
L
Net weight
9.7
kg
Frame material
Cast aluminium
Celestion FTR15-4080HDX SPL & Impedance
Celestion FTR15-4080HDX Dimensions

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