• F622521
  • DE 29323089


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.

Easiest integration at its best!

The best sound isn’t any good if the installation causes trouble.
The PURE F loudspeakers demonstrate with their well thought-out design in every detail, how it is done the right way. This starts with the low installation depth of the drivers, which consider the increasingly limited space in modern vehicles. In addition, the system offers an extensive range of installation accessories with innovative bayonet lock for the extremely compact tweeter, which allows any installation option you can imagine, up to simplifications in the wiring thanks to our "Flex-Crossover" design.

Maximum flexibility – the "Flex-Crossover”

The sophisticated, two-part and immensely space-saving "Flex-Crossover" maximizes installation flexibility, for example when the tweeter is positioned in the A-pillar and the woofer in the door. This offers decisive advantages, especially in space-critical installations. In addition, the tweeter crossover is equipped with a two-stage level adjustment, which allows adaptation to both personal listening taste and the installation situation.

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 coated silk dome of the tweeter guarantees exceptionally airy 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
    • 0.75” / 20 mm silk dome tweeter with neodymium magnet for brilliant and clear treble response even at high levels
    • Intelligent, ultra-compact tweeter design and various mounting pods to fit a wide variety of installation requirements
    • Removeable grille for easy integration behind factory grilles in the vehicle´s original mounting locations
  • Woofer
    • 5.25" / 130 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
  • Flex-Crossover
    • Separate, two-parted crossover for versatile connection options – well suited for installations in vehicles with separate mounting positions of the tweeter and woofer
    • Extensively fine-tuned crossover with 12 dB slope for tweeter and woofer
    • 2-stage tweeter level adjustment with integrated tweeter protection for perfect listening experience

Technical data

Power RMS / Max. 50 / 100 Watts
Frequency response 65 Hz - 22,000 Hz
Impedance 3 Ω
Sensitivity 91.0 dB @ 2.83V / 1m
87.0 dB @ 1W / 1m
Cone material TW: Silk dome
W: Injected  polypropylene with embedded carbon fibers
Crossover Separate, 12/12 dB slope and tweeter protection
Outer diameter TW: - 33.1 mm / 1.30"
        - OE mount:  36 mm / 1.42”
        - flush mount:  42 mm / 1.65”
        - angle mount:  36 mm / 1.42”
M: -
W: 129 mm / 5.08"
Installation diameter TW: - 33.1 mm / 1.30"
        - OE mount:  36 mm / 1.42”
        - flush mount:  36 mm / 1.42”
        - angle mount: –
M: -
W: 112 mm / 4.41"
Installation depth TW:  - 9.8 mm / 0.38"
        - OE mount: 16,8 mm / 0.66”
        - flush mount: 11 mm / 0.43”
        - angle mount: –
M: -
W: 52 mm / 2.05"
 Dimensions crossovers 75.5 x 35.1 x 24 mm / 2.97 x 1.38 x 0.95”

Scope of delivery

2 x Tweeter HELIX PF T20-S
2 x Woofer HELIX PF W130
2 x Two-part Flex-Crossover
6 x Tweeter mounting accessories
1 x Mounting material
1 x Instruction manual
1 x Mounting pattern

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