SICA 4 D 0,8 CS
Full-range
4″ / 102 mm
Nominal diameter
140 Hz
Resonance
0.92
Q factor
87 dB
Sensitivity
± 1.3 mm
Linear excursion
70 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.9
dB
Frequency response
140 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
140
Hz
Mechanical quality factor
QMS
4.20
Electrical quality factor
QES
1.18
Total quality factor
QTS
0.92
Large signal parameters
Maximum linear excursion
xmax
1.3
mm
Air volume displaced at xmax
VD
5.8
cm³
Power handling
P
35
W
Program power
Pmax
70
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
20
mm
Winding height
HVC
4
mm
Winding material
Copper
Former material
Epotex
Magnet
Flux density
B
1.1
T
Force factor
Bl
2.65
N/A
Motor constant
Bl/√RE
1.53
N/√W
Weight
0.154
kg
Material
Ferrite
Diaphragm
Effective diameter
75
mm
Effective area
SD
44
cm²
Moving mass
MMS
3.1
g
Moving mass (without air load)
MMD
2.9
g
Material
Paper
Suspensions
Stiffness
KMS
2.4
N/mm
Compliance
CMS
416
µm/N
Equivalent volume to the compliance
VAS
1.2
L
Mechanical resistance
RMS
0.65
N·s/m
Surround material
Treated Cloth
Dimensions
Nominal diameter
4
″
102
mm
Overall diameter
100
mm
Baffle cutout diameter
90
mm
Overall depth
50
mm
Volume occupied by the driver (estimated)
0.11
L
Net weight
0.4
kg
Frame material
Pressed Sheet Steel
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4″2 way kit
fS
140 Hz
SD
54 cm²
110 - 22000 Hz
QTS
0.90
xmax
2.3 mm
SPL1W
87 dB
Bl/√RE
1.97
Pmax
120 W
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4″Mid-range
fS
146 Hz
SD
53 cm²
120 - 6000 Hz
QTS
0.83
xmax
2.0 mm
SPL1W
87 dB
Bl/√RE
1.96
Pmax
120 W