P.Audio 15FT-88MB
FT
NTLow frequency
15″ / 381 mm
Nominal diameter
54 Hz
Resonance
0.59
Q factor
97 dB
Sensitivity
± 4.75 mm
Linear excursion
1400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.5
dB
Frequency response
50 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
10.15
Electrical quality factor
QES
0.63
Total quality factor
QTS
0.59
Large signal parameters
Maximum linear excursion
xmax
4.75
mm
Air volume displaced at xmax
VD
406
cm³
Power handling
P
700
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.8
Ω
Inductance (1kHz)
LE
0.71
mH
VC Diameter
89
mm
Winding height
HVC
19
mm
Winding material
Flat aluminium wire
Former material
Kapton
Magnet
Flux density
B
1.3
T
Force factor
Bl
17.79
N/A
Motor constant
Bl/√RE
6.82
N/√W
Air gap height
HAG
9.5
mm
Material
Ferrite
Diaphragm
Effective diameter
336
mm
Effective area
SD
855
cm²
Moving mass
MMS
86.1
g
Moving mass (without air load)
MMD
68.6
g
Material
Paper
Suspensions
Stiffness
KMS
9.62
N/mm
Compliance
CMS
104
µm/N
Equivalent volume to the compliance
VAS
108
L
Mechanical resistance
RMS
2.88
N·s/m
Surround material
Cloth
Spider material
Cotton
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
390
mm
Baffle cutout diameter
350
mm
Overall depth
180
mm
Flange thickness
14
mm
Mounting depth
166
mm
Volume occupied by the driver (estimated)
4.8
L
Net weight
9.5
kg
Frame material
Aluminium
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15″Coaxial
fS
50 Hz
SD
855 cm²
50 - 20000 Hz
QTS
0.52
xmax
7.2 mm
SPL1W
96 dB
Bl/√RE
7.1
Pmax
700 W
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15″Low frequency
fS
51 Hz
SD
855 cm²
50 - 4000 Hz
QTS
0.48
xmax
4.5 mm
SPL1W
98 dB
Bl/√RE
7.52
Pmax
1400 W
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15″Low frequency
fS
48 Hz
SD
855 cm²
40 - 3000 Hz
QTS
0.49
xmax
4.5 mm
SPL1W
96 dB
Bl/√RE
6.42
Pmax
500 W