P.Audio 15FT-88MB

FT
NT

Low 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
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
Discard
Apply
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
P.Audio 15FT-88MB SPL & Impedance
P.Audio 15FT-88MB Dimensions

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