HELIX PF C100.2 - 4" 2 Way Coaxial Speakers.




The entry into the HELIX sound world

Enter the HELIX sound world with our PURE F speaker series. The powerful F-Series gets the maximum power out of your amplifier thanks to its 3 Ohms technology. In combination with the exceptional sound performance with powerful bass, clear mids and detailed highs, an exciting sound experience is bound to occur.

Simple integration

The best sound isn’t any good if installation causes problems. The PURE F coaxial loudspeakers demonstrate with their sophisticated design how to do it the right way. The low installation depths of the woofers take into account the increasingly limited space available in modern vehicles.

Cool design – noble materials

The timeless and stylish design of the F loudspeaker series with the dynamic Space-Line styling of the woofer cone is by no means an end in itself, but rather the result of the use of high-quality materials. The carbon fibres embedded in the polypropylene cone of the woofer optimize the midrange reproduction, whereas the lightweight mylar dome of the tweeter provides impulsive, clear highs.


  • High sound quality with deep bass, clear mids and detailed highs
  • Powerful speaker system with high efficiency thanks to 3 Ohms technology
  • Low installation depths for trouble-free installation in almost all vehicles
  • Elegant HELIX design with black matt cone finish and black shiny Space Line styling
  • Tweeter
    • 0.52” / 13 mm mylar dome and neodymium magnet for brilliant and clear treble response
  • Woofer
    • 4” / 100 mm woofer with rigid cone made of injected polypropylene with embedded carbon fibers provides essential stiffness with a high inner damping
    • Powerful magnet system with optimum control for powerful and clear depths
    • Individual HELIX basket with additional ventilation holes for better voice coil cooling and high power handling
  • Crossover
    • Integrated with 6 dB slope

Technical data

Power RMS / Max. 40 / 80 Watts
Frequency response 100 Hz - 22,000 Hz
Impedance 3 Ω
Sensitivity 90.0 dB @ 2.83V / 1m
86.0 dB @ 1W / 1m
Cone material TW: Mylar
M: -
W: Injected  polypropylene with embedded carbon fibers
Crossover Integrated, 6 dB slope
Outer diameter 102.4 mm / 4.03"
Installation diameter 93 mm / 3.66"
Installation depth 43 mm / 1.70"

Scope of delivery

2 x Coaxial speaker HELIX PF C100.2
1 x Mounting material
1 x Instruction manual
1 x Mounting pattern

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