P.Audio GM12-88F

Low frequency

12″ / 305 mm
Nominal diameter
56 Hz
Resonance
0.42
Q factor
94 dB
Sensitivity
± 1.05 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
94.3
dB
Frequency response
60 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
56.0
Hz
Mechanical quality factor
QMS
7.36
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.42

Large signal parameters

Maximum linear excursion
xmax
1.05
mm
Air volume displaced at xmax
VD
56
cm³
Power handling
P
700
W
Program power
Pmax
1400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.58
mH
VC Diameter
89
mm
Winding height
HVC
12.1
mm
Winding material
AL-W
Former material
Glass fiber

Magnet

Flux density
B
1.1
T
Force factor
Bl
17.75
N/A
Motor constant
Bl/√RE
7.43
N/√W
Air gap height
HAG
10
mm
Material
Ferrite

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
69.3
g
Moving mass (without air load)
MMD
60.6
g
Material
Waterproof Paper

Suspensions

Stiffness
KMS
8.77
N/mm
Compliance
CMS
114
µm/N
Equivalent volume to the compliance
VAS
45.5
L
Mechanical resistance
RMS
3.31
N·s/m
Surround material
Cloth
Spider material
Cotton (Silicone Impregnated)

Dimensions

Nominal diameter
12
305
mm
Overall diameter
314
mm
Baffle cutout diameter
283
mm
Overall depth
146
mm
Flange thickness
17
mm
Mounting depth
129
mm
Volume occupied by the driver (estimated)
3.6
L
Net weight
9.2
kg
Frame material
Aluminium
P.Audio GM12-88F SPL & Impedance
P.Audio GM12-88F Dimensions

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