Jensen Vintage Ceramic C8R
4Ω
8ΩGuitar Speaker
8″ / 207 mm
Nominal diameter
131 Hz
Resonance
1.42
Q factor
96 dB
Sensitivity
± 1 mm
Linear excursion
50 W
Program Power
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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
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8″Mid-range
fS
116 Hz
SD
241 cm²
115 - 8500 Hz
QTS
1.19
xmax
4.8 mm
SPL1W
93 dB
Bl/√RE
3.36
Pmax
400 W