Jensen Vintage AlNiCo P12Q

Guitar Speaker

12″ / 306 mm
Nominal diameter
91 Hz
Resonance
2.03
Q factor
98 dB
Sensitivity
± 1 mm
Linear excursion
80 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
97.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
90.5
Hz
Mechanical quality factor
QMS
11.57
Electrical quality factor
QES
2.46
Total quality factor
QTS
2.03

Large signal parameters

Maximum linear excursion
xmax
1.0
mm
Air volume displaced at xmax
VD
49
cm³
Power handling
P
40
W
Program power
Pmax
80
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.67
mH
VC Diameter
32
mm
Winding height
HVC
8
mm
Winding material
Copper
Former material
Nomex

Magnet

Flux density
B
0.98
T
Force factor
Bl
5.88
N/A
Motor constant
Bl/√RE
2.48
N/√W
Air gap height
HAG
6
mm
Weight
0.3
kg
Material
Alnico

Diaphragm

Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
26.8
g
Moving mass (without air load)
MMD
19
g
Material
Paper

Suspensions

Stiffness
KMS
8.7
N/mm
Compliance
CMS
115
µm/N
Equivalent volume to the compliance
VAS
39.5
L
Mechanical resistance
RMS
1.32
N·s/m
Surround material
Integrated Paper

Dimensions

Nominal diameter
12
306
mm
Overall diameter
306
mm
Volume occupied by the driver (estimated)
0.78
L
Net weight
1.9
kg
Frame material
Pressed Sheet
Jensen P12Q SPL & Impedance
Jensen P12Q Dimensions

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