Eminence LA12850
Woofer
12″ / 305 mm
Nominal diameter
46 Hz
Resonance
0.32
Q factor
95 dB
Sensitivity
± 5 mm
Linear excursion
1600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.5
dB
Frequency response
63 - 2100
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
12.73
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Maximum excursion before damage
xlim
14.0
mm
Air volume displaced at xmax
VD
273
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.9
Ω
Inductance (1kHz)
LE
0.96
mH
VC Diameter
102
mm
Winding material
Copper
Former material
Polyimide
Magnet
Force factor
Bl
19.51
N/A
Motor constant
Bl/√RE
8.05
N/√W
Air gap height
HAG
9.5
mm
Weight
3.09
kg
Material
Ferrite
Diaphragm
Effective diameter
264
mm
Effective area
SD
545
cm²
Moving mass
MMS
73
g
Moving mass (without air load)
MMD
64
g
Material
Water resistant treated paper
Suspensions
Stiffness
KMS
6.25
N/mm
Compliance
CMS
160
µm/N
Equivalent volume to the compliance
VAS
66.1
L
Mechanical resistance
RMS
1.66
N·s/m
Surround material
Paper
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
313
mm
Baffle cutout diameter
281
mm
Overall depth
119
mm
Volume occupied by the driver
2.9
L
Net weight
9.3
kg
Frame material
Die-cast aluminum
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fS
46 Hz
SD
531 cm²
45 - 3500 Hz
QTS
0.31
xmax
7.0 mm
SPL1W
95 dB
Bl/√RE
7.93
Pmax
800 W
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12″Low frequency
fS
47 Hz
SD
531 cm²
50 - 4500 Hz
QTS
0.35
xmax
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SPL1W
94 dB
Bl/√RE
7.52
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fS
48 Hz
SD
515 cm²
40 - 2000 Hz
QTS
0.35
xmax
10.5 mm
SPL1W
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Bl/√RE
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