HELIX PURE S 4B
Mid Bass
4″ / 100 mm
Nominal diameter
120 Hz
Resonance
0.88
Q factor
87 dB
Sensitivity
± 3 mm
Linear excursion
140 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 86.9
- dB
- Frequency response
- 75 - 6000
- Hz
- Resonance frequency (free air)
- fS
- 120
- Hz
- Mechanical quality factor
- QMS
- 4.24
- Electrical quality factor
- QES
- 1.11
- Total quality factor
- QTS
- 0.88
- Maximum linear excursion
- xmax
- 3.0
- mm
- Air volume displaced at xmax
- VD
- 18
- cm³
- Power handling
- P
- 70
- W
- Program power
- Pmax
- 140
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.4
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.14
- mH
- VC Diameter
- 25
- mm
- Winding height
- HVC
- 12
- mm
- Force factor
- Bl
- 4.1
- N/A
- Motor constant
- Bl/√RE
- 2.22
- N/√W
- Effective diameter
- 88
- mm
- Effective area
- SD
- 61
- cm²
- Moving mass
- MMS
- 5.9
- g
- Moving mass (without air load)
- MMD
- 5.6
- g
- Stiffness
- KMS
- 4.31
- N/mm
- Compliance
- CMS
- 232
- µm/N
- Equivalent volume to the compliance
- VAS
- 1.2
- L
- Mechanical resistance
- RMS
- 1.19
- N·s/m
- Nominal diameter
- 4
- ″
- 100
- mm
- Overall diameter
- 102
- mm
- Baffle cutout diameter
- 92
- mm
- Mounting depth
- 47
- mm
- Volume occupied by the driver (estimated)
- 0.14
- L
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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