HELIX PURE P 5B
Mid Bass
5″ / 130 mm
Nominal diameter
71 Hz
Resonance
0.44
Q factor
87 dB
Sensitivity
± 3 mm
Linear excursion
160 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.1
dB
Frequency response
60 - 5500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
71.0
Hz
Mechanical quality factor
QMS
5.82
Electrical quality factor
QES
0.47
Total quality factor
QTS
0.44
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
24
cm³
Power handling
P
80
W
Program power
Pmax
160
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz, estimated)
LE
0.19
mH
VC Diameter
25
mm
Winding height
HVC
12
mm
Magnet
Force factor
Bl
5.6
N/A
Motor constant
Bl/√RE
2.99
N/√W
Diaphragm
Effective diameter
100
mm
Effective area
SD
79
cm²
Moving mass
MMS
9.6
g
Moving mass (without air load)
MMD
9.1
g
Suspensions
Stiffness
KMS
1.92
N/mm
Compliance
CMS
522
µm/N
Equivalent volume to the compliance
VAS
4.5
L
Mechanical resistance
RMS
0.73
N·s/m
Dimensions
Nominal diameter
5
″
130
mm
Overall diameter
129
mm
Baffle cutout diameter
111
mm
Mounting depth
63
mm
Volume occupied by the driver (estimated)
0.26
L
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SpeakerbenchSimilar speaker drivers to HELIX P 5B
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4″2 Way
fS
70 Hz
SD
55 cm²
50 - 22000 Hz
QTS
0.50
xmax
1.5 mm
SPL1W
87 dB
Bl/√RE
1.88
Pmax
60 W
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5″Coaxial
fS
70 Hz
SD
95 cm²
70 - 18000 Hz
QTS
0.45
xmax
5.5 mm
SPL1W
87 dB
Bl/√RE
3.74
Pmax
300 W
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4″Full-range
fS
70 Hz
SD
57 cm²
70 - 17000 Hz
QTS
0.42
xmax
2.6 mm
SPL1W
88 dB
Bl/√RE
2.1
Pmax
40 W