Eminence JS-1250
Guitar Speaker
12″ / 309 mm
Nominal diameter
92 Hz
Resonance
0.61
Q factor
100 dB
Sensitivity
± 0.79 mm
Linear excursion
100 W
Program Power
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Amazon.com
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
100.2
dB
Frequency response
80 - 5200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
92.0
Hz
Mechanical quality factor
QMS
15.69
Electrical quality factor
QES
0.63
Total quality factor
QTS
0.61
Large signal parameters
Maximum linear excursion
xmax
0.79
mm
Air volume displaced at xmax
VD
41
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.4
Ω
Inductance (1kHz)
LE
0.5
mH
VC Diameter
44
mm
Winding material
Copper
Former material
Nomex
Magnet
Force factor
Bl
12.91
N/A
Motor constant
Bl/√RE
5.1
N/√W
Air gap height
HAG
8
mm
Weight
1.077
kg
Material
Ferrite
Diaphragm
Effective diameter
257
mm
Effective area
SD
520
cm²
Moving mass
MMS
28
g
Moving mass (without air load)
MMD
19.6
g
Suspensions
Stiffness
KMS
9.09
N/mm
Compliance
CMS
110
µm/N
Equivalent volume to the compliance
VAS
41.2
L
Mechanical resistance
RMS
1.03
N·s/m
Surround material
Full molded paper
Dimensions
Nominal diameter
12
″
309
mm
Overall diameter
309
mm
Baffle cutout diameter
283
mm
Overall depth
133
mm
Volume occupied by the driver
2.0
L
Net weight
3.63
kg
Frame material
Pressed steel
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fS
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SD
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80 - 5200 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
4.98
Pmax
80 W
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fS
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SD
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SD
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80 - 5000 Hz
QTS
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xmax
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SPL1W
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