Eminence IMPERO 12A
Subwoofer
12″ / 305 mm
Nominal diameter
43 Hz
Resonance
0.32
Q factor
94 dB
Sensitivity
± 6.22 mm
Linear excursion
2200 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.6
dB
Frequency response
56 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
43.0
Hz
Mechanical quality factor
QMS
13.84
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
6.22
mm
Maximum excursion before damage
xlim
12.5
mm
Air volume displaced at xmax
VD
339
cm³
Power handling
P
1100
W
Program power
Pmax
2200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
1.46
mH
VC Diameter
102
mm
Winding material
Copper
Former material
Fiberglass
Magnet
Force factor
Bl
19.49
N/A
Motor constant
Bl/√RE
8.25
N/√W
Air gap height
HAG
12.7
mm
Weight
3.09
kg
Material
Ferrite
Diaphragm
Effective diameter
264
mm
Effective area
SD
545
cm²
Moving mass
MMS
83
g
Moving mass (without air load)
MMD
74
g
Material
Water Resistant Paper
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
70.2
L
Mechanical resistance
RMS
1.62
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
315
mm
Baffle cutout diameter
315
mm
Overall depth
156
mm
Volume occupied by the driver
3.0
L
Net weight
10.98
kg
Frame material
Die Cast Aluminum
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SD
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40 - 2000 Hz
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SPL1W
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Bl/√RE
7.37
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SD
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SD
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SPL1W
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