Jensen Vintage Ceramic C12K-2

16Ω

Guitar Speaker

12″ / 307 mm
Nominal diameter
85 Hz
Resonance
0.59
Q factor
99 dB
Sensitivity
200 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
98.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
85.0
Hz
Mechanical quality factor
QMS
12.07
Electrical quality factor
QES
0.62
Total quality factor
QTS
0.59

Large signal parameters

Power handling
P
100
W
Program power
Pmax
200
W

Voice Coil

Nominal impedance
Z
16
Ω
DC resistance
RE
12.0
Ω
Inductance (1kHz)
LE
1.21
mH
VC Diameter
50
mm
Winding height
HVC
10
mm
Winding material
Copper
Former material
Nomex

Magnet

Flux density
B
1.15
T
Force factor
Bl
17.19
N/A
Motor constant
Bl/√RE
4.96
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
28.5
g
Moving mass (without air load)
MMD
20.6
g
Material
Paper

Suspensions

Stiffness
KMS
8.13
N/mm
Compliance
CMS
123
µm/N
Equivalent volume to the compliance
VAS
42.1
L
Mechanical resistance
RMS
1.26
N·s/m
Surround material
Integrated Paper

Dimensions

Nominal diameter
12
307
mm
Overall diameter
307
mm
Volume occupied by the driver (estimated)
1.8
L
Net weight
4.3
kg
Frame material
Pressed Sheet
Jensen C12K-2 Dimensions

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