HELIX COMPOSE Ci7 W165FM-S3

Mid Bass

6.5″ / 165 mm
Nominal diameter
60 Hz
Resonance
0.55
Q factor
87 dB
Sensitivity
± 3.7 mm
Linear excursion
225 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
87.1
dB
Frequency response
50 - 3500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
3.00
Electrical quality factor
QES
0.68
Total quality factor
QTS
0.55

Large signal parameters

Maximum linear excursion
xmax
3.7
mm
Air volume displaced at xmax
VD
49
cm³
Power handling
P
150
W
Program power
Pmax
225
W

Voice Coil

Nominal impedance
Z
3
Ω
DC resistance
RE
2.9
Ω
Inductance (1kHz, estimated)
LE
0.2
mH
VC Diameter
37
mm
Winding height
HVC
13.4
mm

Magnet

Force factor
Bl
4.8
N/A
Motor constant
Bl/√RE
2.82
N/√W

Diaphragm

Effective diameter
129
mm
Effective area
SD
131
cm²
Moving mass
MMS
14.8
g
Moving mass (without air load)
MMD
13.7
g

Suspensions

Stiffness
KMS
2.08
N/mm
Compliance
CMS
480
µm/N
Equivalent volume to the compliance
VAS
11.6
L
Mechanical resistance
RMS
1.83
N·s/m

Dimensions

Nominal diameter
6.5
165
mm
Overall diameter
165
mm
Baffle cutout diameter
142
mm
Mounting depth
66
mm
Volume occupied by the driver (estimated)
0.5
L

Export this driver to a simulation software:

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