Jensen Silverbird C 12/70 SB
Guitar Speaker
12″ / 307 mm
Nominal diameter
87 Hz
Resonance
1.03
Q factor
96 dB
Sensitivity
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.0
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
87.0
Hz
Mechanical quality factor
QMS
11.79
Electrical quality factor
QES
1.13
Total quality factor
QTS
1.03
Large signal parameters
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.57
mH
VC Diameter
38
mm
Winding height
HVC
10
mm
Winding material
Aluminum
Former material
Kapton
Magnet
Flux density
B
1.3
T
Force factor
Bl
9.09
N/A
Motor constant
Bl/√RE
3.71
N/√W
Air gap height
HAG
6
mm
Weight
0.81
kg
Material
Ferrite
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
28.4
g
Moving mass (without air load)
MMD
20.5
g
Material
Paper
Suspensions
Stiffness
KMS
8.48
N/mm
Compliance
CMS
118
µm/N
Equivalent volume to the compliance
VAS
40.3
L
Mechanical resistance
RMS
1.32
N·s/m
Surround material
Integrated Paper
Dimensions
Nominal diameter
12
″
307
mm
Overall diameter
307
mm
Volume occupied by the driver (estimated)
1.4
L
Net weight
3.3
kg
Frame material
Pressed Sheet
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Similar speaker drivers to Jensen C 12/70 SB
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Beyma 12GA508 Ω
12″Full-range
fS
90 Hz
SD
530 cm²
100 - 18000 Hz
QTS
1.16
xmax
3.0 mm
SPL1W
96 dB
Bl/√RE
4.02
Pmax
500 W
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