SICA 12 C 2,5 CP
Coaxial
12″ / 321 mm
Nominal diameter
51 Hz
Resonance
0.3
Q factor
97 dB
Sensitivity
± 5 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.5
dB
Frequency response
55 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.5
Hz
Mechanical quality factor
QMS
8.85
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
266
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
1.12
mH
VC Diameter
65
mm
Winding height
HVC
8
mm
Winding material
Copper
Former material
Kapton
Magnet
Flux density
B
1.3
T
Force factor
Bl
17.3
N/A
Motor constant
Bl/√RE
6.95
N/√W
Weight
1.45
kg
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
47
g
Moving mass (without air load)
MMD
38.1
g
Material
Paper
Suspensions
Stiffness
KMS
4.74
N/mm
Compliance
CMS
211
µm/N
Equivalent volume to the compliance
VAS
84.5
L
Mechanical resistance
RMS
1.69
N·s/m
Surround material
Treated Cloth
Dimensions
Nominal diameter
12
″
321
mm
Overall diameter
320
mm
Baffle cutout diameter
284
mm
Overall depth
132
mm
Volume occupied by the driver (estimated)
2.3
L
Net weight
5.0
kg
Frame material
Aluminium Die-Cast
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fS
46 Hz
SD
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45 - 18000 Hz
QTS
0.26
xmax
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SPL1W
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Bl/√RE
9.55
Pmax
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fS
52 Hz
SD
532 cm²
51 - 3500 Hz
QTS
0.32
xmax
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SPL1W
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Bl/√RE
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fS
46 Hz
SD
531 cm²
60 - 5000 Hz
QTS
0.25
xmax
4.5 mm
SPL1W
97 dB
Bl/√RE
7.17
Pmax
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