15″ / 381 mm
Nominal diameter
37 Hz
Resonance
0.31
Q factor
95 dB
Sensitivity
± 8 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.7
dB
Frequency response
35 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.1
Hz
Mechanical quality factor
QMS
4.67
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
687
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.9
Ω
Inductance (1kHz)
LE
1.59
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Round Copper
Former material
Glass Fibre
Magnet
Force factor
Bl
23.15
N/A
Motor constant
Bl/√RE
9.54
N/√W
Air gap height
HAG
9.5
mm
Weight
3.1
kg
Diaphragm
Effective diameter
330
mm
Effective area
SD
858
cm²
Moving mass
MMS
130.4
g
Moving mass (without air load)
MMD
113
g
Suspensions
Stiffness
KMS
7.14
N/mm
Compliance
CMS
140
µm/N
Equivalent volume to the compliance
VAS
146
L
Mechanical resistance
RMS
6.51
N·s/m
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
385
mm
Baffle cutout diameter
351
mm
Overall depth
173
mm
Volume occupied by the driver (estimated)
4.6
L
Net weight
9.5
kg
Frame material
Cast Aluminium
Similar subwoofers to Celestion FTR15-4080HD
15″Subwoofer
fS
38 Hz
SD
855 cm²
47 - 3500 Hz
QTS
0.33
xmax
7.5 mm
SPL1W
94 dB
Bl/√RE
9.56
Pmax
800 W
18″Woofer
fS
35 Hz
SD
1158 cm²
30 - 250 Hz
QTS
0.29
xmax
12.5 mm
SPL1W
95 dB
Bl/√RE
13
Pmax
3200 W
15″Low frequency
fS
35 Hz
SD
855 cm²
35 - 2500 Hz
QTS
0.28
xmax
8.5 mm
SPL1W
95 dB
Bl/√RE
9.74
Pmax
2000 W