HELIX PURE S 3M

Mid-range

3″ / 75 mm
Nominal diameter
130 Hz
Resonance
0.43
Q factor
86 dB
Sensitivity
± 2 mm
Linear excursion
150 W
Program Power
HELIX S 3M Mid-rangeHELIX S 3M Mid-rangeHELIX S 3M Mid-range
Excursion
Velocity
SPL
Phase
Group delay
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
86.0
dB
Frequency response
400 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
130
Hz
Mechanical quality factor
QMS
4.47
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.43

Large signal parameters

Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
6.4
cm³
Power handling
P
75
W
Program power
Pmax
150
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz, estimated)
LE
0.1
mH
VC Diameter
25
mm
Winding height
HVC
8
mm

Magnet

Force factor
Bl
4.6
N/A
Motor constant
Bl/√RE
2.57
N/√W

Diaphragm

Effective diameter
64
mm
Effective area
SD
32
cm²
Moving mass
MMS
3.8
g
Moving mass (without air load)
MMD
3.7
g

Suspensions

Stiffness
KMS
2.53
N/mm
Compliance
CMS
396
µm/N
Equivalent volume to the compliance
VAS
0.57
L
Mechanical resistance
RMS
0.69
N·s/m

Dimensions

Nominal diameter
3
″
75
mm
Overall diameter
90
mm
Baffle cutout diameter
73
mm
Mounting depth
37
mm
Volume occupied by the driver (estimated)
0.1
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

Export this driver to a simulation software:

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fS
130 Hz
SD
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400 - 5000 Hz
QTS
0.45
xmax
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SPL1W
85 dB
Bl/√RE
2.42
Pmax
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fS
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SD
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xmax
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Bl/√RE
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Pmax
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