Jensen D-Series C12D

Guitar Speaker

12″ / 307 mm
Nominal diameter
63 Hz
Resonance
0.37
Q factor
98 dB
Sensitivity
300 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
98.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
62.5
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.37

Large signal parameters

Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.22
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
10.12
N/A
Motor constant
Bl/√RE
5.75
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
34.8
g
Moving mass (without air load)
MMD
26.9
g
Material
Paper

Suspensions

Stiffness
KMS
5.38
N/mm
Compliance
CMS
186
µm/N
Equivalent volume to the compliance
VAS
63.8
L
Mechanical resistance
RMS
4.14
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
Jensen C12D Dimensions

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