HELIX COMPOSE Ci3 M100FM-S3
Mid-range
4″ / 100 mm
Nominal diameter
146 Hz
Resonance
0.83
Q factor
87 dB
Sensitivity
± 2 mm
Linear excursion
120 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.4
dB
Frequency response
120 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
146
Hz
Mechanical quality factor
QMS
4.49
Electrical quality factor
QES
1.02
Total quality factor
QTS
0.83
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
0.1
mH
VC Diameter
25
mm
Winding height
HVC
4.8
mm
Magnet
Force factor
Bl
3.4
N/A
Motor constant
Bl/√RE
1.96
N/√W
Diaphragm
Effective diameter
82
mm
Effective area
SD
53
cm²
Moving mass
MMS
4.3
g
Moving mass (without air load)
MMD
4
g
Suspensions
Stiffness
KMS
3.57
N/mm
Compliance
CMS
280
µm/N
Equivalent volume to the compliance
VAS
1.1
L
Mechanical resistance
RMS
0.87
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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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″Full-range
fS
140 Hz
SD
44 cm²
140 - 20000 Hz
QTS
0.92
xmax
1.3 mm
SPL1W
87 dB
Bl/√RE
1.53
Pmax
70 W
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