Jensen Vintage Ceramic C12R
Guitar Speaker
12″ / 306 mm
Nominal diameter
88 Hz
Resonance
2.47
Q factor
98 dB
Sensitivity
± 0.8 mm
Linear excursion
50 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
97.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
88.3
Hz
Mechanical quality factor
QMS
18.52
Electrical quality factor
QES
2.85
Total quality factor
QTS
2.47
Large signal parameters
Maximum linear excursion
xmax
0.8
mm
Air volume displaced at xmax
VD
39
cm³
Power handling
P
25
W
Program power
Pmax
50
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.7
Ω
Inductance (1kHz)
LE
0.49
mH
VC Diameter
25
mm
Winding height
HVC
8
mm
Winding material
Copper
Former material
Kapton
Magnet
Flux density
B
1.0
T
Force factor
Bl
6.24
N/A
Motor constant
Bl/√RE
2.41
N/√W
Air gap height
HAG
6
mm
Weight
0.27
kg
Material
Ferrite
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
29.5
g
Moving mass (without air load)
MMD
21.7
g
Material
Paper
Suspensions
Stiffness
KMS
9.09
N/mm
Compliance
CMS
110
µm/N
Equivalent volume to the compliance
VAS
37.5
L
Mechanical resistance
RMS
0.88
N·s/m
Surround material
Integrated Paper
Dimensions
Nominal diameter
12
″
306
mm
Overall diameter
306
mm
Volume occupied by the driver (estimated)
0.56
L
Net weight
1.4
kg
Frame material
Pressed Sheet
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