HELIX COMPOSE Ci7 M100FM-S3
Mid-range
4″ / 100 mm
Nominal diameter
85 Hz
Resonance
0.47
Q factor
87 dB
Sensitivity
± 1.3 mm
Linear excursion
150 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.6
dB
Frequency response
110 - 7000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
85.0
Hz
Mechanical quality factor
QMS
4.58
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
1.3
mm
Air volume displaced at xmax
VD
7.2
cm³
Power handling
P
100
W
Program power
Pmax
150
W
Voice Coil
Nominal impedance
Z
3
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz, estimated)
LE
0.12
mH
VC Diameter
25
mm
Winding height
HVC
5.5
mm
Magnet
Force factor
Bl
4.3
N/A
Motor constant
Bl/√RE
2.48
N/√W
Diaphragm
Effective diameter
84
mm
Effective area
SD
55
cm²
Moving mass
MMS
5.9
g
Moving mass (without air load)
MMD
5.6
g
Suspensions
Stiffness
KMS
1.7
N/mm
Compliance
CMS
590
µm/N
Equivalent volume to the compliance
VAS
2.5
L
Mechanical resistance
RMS
0.69
N·s/m
Dimensions
Nominal diameter
4
″
100
mm
Overall diameter
98
mm
Baffle cutout diameter
89
mm
Mounting depth
27
mm
Volume occupied by the driver (estimated)
0.13
L
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fS
82 Hz
SD
64 cm²
50 - 4200 Hz
QTS
0.46
xmax
3.5 mm
SPL1W
86 dB
Bl/√RE
2.33
Pmax
200 W
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4″Mid-range
fS
85 Hz
SD
55 cm²
85 - 10000 Hz
QTS
0.43
xmax
1.5 mm
SPL1W
87 dB
Bl/√RE
1.91
Pmax
120 W
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3 x 5″Full-range
fS
85 Hz
SD
47 cm²
85 - 15000 Hz
QTS
0.40
xmax
3.0 mm
SPL1W
88 dB
Bl/√RE
1.6
Pmax
40 W