HELIX COMPOSE Ci3 C100.2FM-S3
Mid-range
4″ / 100 mm
Nominal diameter
137 Hz
Resonance
0.66
Q factor
90 dB
Sensitivity
± 2 mm
Linear excursion
120 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.2
dB
Frequency response
100 - 25000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
137
Hz
Mechanical quality factor
QMS
4.37
Electrical quality factor
QES
0.78
Total quality factor
QTS
0.66
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
11
cm³
Power handling
P
80
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
3
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz, estimated)
LE
0.08
mH
VC Diameter
25
mm
Winding height
HVC
4.8
mm
Magnet
Force factor
Bl
3.2
N/A
Motor constant
Bl/√RE
1.85
N/√W
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
3
g
Moving mass (without air load)
MMD
2.7
g
Suspensions
Stiffness
KMS
2.19
N/mm
Compliance
CMS
456
µm/N
Equivalent volume to the compliance
VAS
2.1
L
Mechanical resistance
RMS
0.58
N·s/m
Dimensions
Nominal diameter
4
″
100
mm
Overall diameter
98
mm
Baffle cutout diameter
89
mm
Mounting depth
30
mm
Volume occupied by the driver (estimated)
0.13
L
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fS
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SD
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200 - 25000 Hz
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Bl/√RE
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Pmax
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fS
141 Hz
SD
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fS
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SD
85 cm²
150 - 10000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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