Jensen Vintage Ceramic C8R

Guitar Speaker

8″ / 207 mm
Nominal diameter
131 Hz
Resonance
1.42
Q factor
96 dB
Sensitivity
± 1 mm
Linear excursion
50 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
95.9
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
131
Hz
Mechanical quality factor
QMS
9.65
Electrical quality factor
QES
1.67
Total quality factor
QTS
1.42

Large signal parameters

Maximum linear excursion
xmax
1.0
mm
Air volume displaced at xmax
VD
21
cm³
Power handling
P
25
W
Program power
Pmax
50
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
0.22
mH
VC Diameter
25
mm
Winding height
HVC
4
mm
Winding material
Copper
Former material
Kapton

Magnet

Flux density
B
1.0
T
Force factor
Bl
3.76
N/A
Motor constant
Bl/√RE
2.17
N/√W
Air gap height
HAG
6
mm
Weight
0.27
kg
Material
Ferrite

Diaphragm

Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
9.2
g
Moving mass (without air load)
MMD
6.9
g
Material
Paper

Suspensions

Stiffness
KMS
6.21
N/mm
Compliance
CMS
161
µm/N
Equivalent volume to the compliance
VAS
10.3
L
Mechanical resistance
RMS
0.78
N·s/m
Surround material
Integrated Paper

Dimensions

Nominal diameter
8
207
mm
Overall diameter
207
mm
Volume occupied by the driver (estimated)
0.4
L
Net weight
1.0
kg
Frame material
Pressed Sheet
Jensen C8R Dimensions

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