Helix PF C165.2 – 6.5″ 2-way coaxial speaker
The HELIX PF C165.2 is a 2-way coaxial speaker with a 165 mm (6.5″) woofer and an integrated 13 mm (0.52″) tweeter from the PURE F series, which Audiotec Fischer presents as the entry into the HELIX sound. Using 3 Ohm technology, the series is designed to extract maximum output from the amplifier and to provide powerful bass, clear mids and detailed highs, while the coaxial layout keeps installation simple.
The woofer cone is made of injected polypropylene with embedded carbon fibers for stiffness and internal damping, which the page credits with improved midrange reproduction. A magnet system tuned for controlled, powerful bass and a HELIX basket with additional ventilation holes complete the woofer. The lightweight Mylar dome tweeter with neodymium magnet delivers fast, clear highs. Visually it follows the HELIX design with a matte black cone and glossy black Space-Line styling.
Key Features
- Entry into HELIX sound: part of the PURE F series.
- 3 Ohm technology: high efficiency to get maximum power from the amplifier.
- Coaxial design: easy integration with tweeter mounted on the woofer.
- Low installation depth: 58 mm, suitable for almost all vehicles.
- Carbon-fiber reinforced cone: injected polypropylene with embedded carbon fibers for stiffness and internal damping.
- Woofer magnet system: designed for controlled, powerful bass.
- Ventilated HELIX basket: extra ventilation holes for voice coil cooling and higher power handling.
- Mylar tweeter: 13 mm dome with neodymium magnet for clear treble.
- Integrated crossover: 6 dB slope.
- HELIX design: matte black cone with glossy black Space-Line styling.
Drivers & Construction
- Woofer: 165 mm injected polypropylene cone with embedded carbon fibers, HELIX basket with additional ventilation holes.
- Tweeter: 13 mm (0.52″) Mylar dome with neodymium magnet, integrated coaxially.
Acoustic Performance
- Power handling: 60 W RMS / 120 W max.
- Impedance: 3 Ω.
- Sensitivity: 92.5 dB @ 2.83 V / 1 m; 88.5 dB @ 1 W / 1 m.
- Frequency response: 60 – 22,000 Hz.
Crossover
- Type: integrated crossover with 6 dB slope.
Installation Notes
- Dimensions: outer diameter 165 mm, installation diameter 142 mm, installation depth 58 mm.
- Supplied: mounting material and mounting pattern included.
Technical Specifications
| Power RMS / Max. | 60 / 120 Watts |
| Frequency response | 60 Hz – 22,000 Hz |
| Impedance | 3 Ω |
| Sensitivity | 92.5 dB @ 2.83V / 1m 88.5 dB @ 1W / 1m |
| Cone material | TW: Mylar M: – W: Injected polypropylene with embedded carbon fibers |
| Crossover | Integrated, 6 dB slope |
| Outer diameter | 165 mm / 6.50″ |
| Installation diameter | 142 mm / 5.59″ |
| Installation depth | 58 mm / 2.30″ |
Scope of Delivery
2 x Coaxial speaker HELIX PF C165.2
1 x Mounting material
1 x Instruction manual
1 x Mounting pattern
