HELIX PURE C 6B

Woofer

6.5″ / 165 mm
Nominal diameter
54 Hz
Resonance
0.53
Q factor
87 dB
Sensitivity
± 3 mm
Linear excursion
300 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
87.3
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
11.10
Electrical quality factor
QES
0.55
Total quality factor
QTS
0.53

Large signal parameters

Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
41
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz, estimated)
LE
0.27
mH
VC Diameter
37
mm
Winding height
HVC
12
mm

Magnet

Force factor
Bl
6.1
N/A
Motor constant
Bl/√RE
3.31
N/√W

Diaphragm

Effective diameter
131
mm
Effective area
SD
135
cm²
Moving mass
MMS
17.8
g
Moving mass (without air load)
MMD
16.6
g

Suspensions

Stiffness
KMS
2.04
N/mm
Compliance
CMS
490
µm/N
Equivalent volume to the compliance
VAS
12.4
L
Mechanical resistance
RMS
0.54
N·s/m

Dimensions

Nominal diameter
6.5
165
mm
Overall diameter
166
mm
Baffle cutout diameter
145
mm
Mounting depth
67
mm
Volume occupied by the driver (estimated)
0.51
L

Export this driver to a simulation software:

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fS
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SD
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55 - 22000 Hz
QTS
0.55
xmax
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SD
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SD
129 cm²
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