Jensen D-Series C12D
4Ω
8Ω
Guitar Speaker
12″ / 307 mm
Nominal diameter
62 Hz
Resonance
0.4
Q factor
99 dB
Sensitivity
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
99.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
62.3
Hz
Mechanical quality factor
QMS
4.26
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.40
Large signal parameters
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
0.27
mH
VC Diameter
50
mm
Winding height
HVC
10
mm
Winding material
Copper
Former material
Aluminum
Magnet
Flux density
B
1.1
T
Force factor
Bl
12.25
N/A
Motor constant
Bl/√RE
5.32
N/√W
Air gap height
HAG
8
mm
Weight
1.45
kg
Material
Ferrite
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
32
g
Moving mass (without air load)
MMD
24.1
g
Material
Paper
Suspensions
Stiffness
KMS
4.9
N/mm
Compliance
CMS
204
µm/N
Equivalent volume to the compliance
VAS
69.6
L
Mechanical resistance
RMS
2.94
N·s/m
Surround material
Integrated Paper
Dimensions
Nominal diameter
12
″
307
mm
Overall diameter
307
mm
Volume occupied by the driver (estimated)
2.0
L
Net weight
4.6
kg
Frame material
Pressed Sheet
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Similar speaker drivers to Jensen C12D
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12″Guitar Speaker
fS
63 Hz
SD
545 cm²
65 - 3500 Hz
QTS
0.42
xmax
0.8 mm
SPL1W
99 dB
Bl/√RE
6.15
Pmax
700 W
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