HELIX COMPOSE Ci7 W130-S3
Mid Bass
5″ / 130 mm
Nominal diameter
73 Hz
Resonance
0.41
Q factor
87 dB
Sensitivity
± 3.4 mm
Linear excursion
180 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.1
dB
Frequency response
70 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
73.0
Hz
Mechanical quality factor
QMS
2.38
Electrical quality factor
QES
0.50
Total quality factor
QTS
0.41
Large signal parameters
Maximum linear excursion
xmax
3.4
mm
Air volume displaced at xmax
VD
29
cm³
Power handling
P
120
W
Program power
Pmax
180
W
Voice Coil
Nominal impedance
Z
3
Ω
DC resistance
RE
2.9
Ω
Inductance (1kHz, estimated)
LE
0.17
mH
VC Diameter
25
mm
Winding height
HVC
12.8
mm
Magnet
Force factor
Bl
5.5
N/A
Motor constant
Bl/√RE
3.23
N/√W
Diaphragm
Effective diameter
104
mm
Effective area
SD
85
cm²
Moving mass
MMS
11.1
g
Moving mass (without air load)
MMD
10.5
g
Suspensions
Stiffness
KMS
2.38
N/mm
Compliance
CMS
420
µm/N
Equivalent volume to the compliance
VAS
4.3
L
Mechanical resistance
RMS
2.15
N·s/m
Dimensions
Nominal diameter
5
″
130
mm
Overall diameter
130
mm
Baffle cutout diameter
117
mm
Mounting depth
59
mm
Volume occupied by the driver (estimated)
0.27
L
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SD
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SD
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