HELIX Ci3 C165.2FM-S3 MK2 6.5" 165mm 2-Way Coaxial Speaker Pair 3 Ohm 100W RMS FlexMount Compose i3

SKU:Ci3-C165.2FM-S3-MK2

$425.00



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HELIX COMPOSE Ci3 C165.2FM-S3 MK2 6.5" (165 mm) 2-way coaxial speaker pair. 3 Ohm, 100 W RMS / 150 W max, 92 dB, 20 mm aluminium tweeter, Cenosphere paper cone, ProConnect terminal, FlexMount165 compatible. Universal fit.

Overview

The HELIX Ci3 C165.2FM-S3 MK2 is a 6.5" / 165 mm 2-way performance coaxial speaker pair from the HELIX COMPOSE i3 range by Audiotec Fischer (Germany). It features a 20 mm black aluminium-dome tweeter, a Cenosphere-coated paper midbass cone, highly efficient 3 Ohm technology and FlexMount165 compatibility. It is a universal speaker that can be installed in the original mounting location of many vehicles using optional car-specific FlexMount165 adaptor rings and WireKits (sold separately).

HELIX COMPOSE. The perfect speaker for any composition.

Born out of the increasingly demanding challenges of modern automobile technology and the HELIX pursuit of intelligent solutions, the progressive redesign of proven universal speaker systems became the mission. The result is the innovative HELIX COMPOSE platform which, following the motto "developed inside the vehicle, for the vehicle", combines classic universal speakers with the advantages of vehicle-specific systems. Innovative materials and the latest technologies are paired with smart, practical engineering – the best of both worlds in harmony: high efficiency, fantastic sound quality and enormous dynamics that fit in any vehicle. HELIX COMPOSE – universal speakers evolved.

Performance highlight

The i3 coaxial systems give you everything you would expect from a great 2-way system: a first-class sound experience that, thanks to high-quality materials and particularly smart engineering, conveniently finds its way into the automobile. All components harmonise perfectly and form an ideal team with HELIX and MATCH amplifiers, ensuring maximum performance and power output at all times. New mechanical technologies have also been implemented with a clear focus on safety during connection and operation, creating ideal conditions for vehicle integration with maximum compatibility.

High efficiency

HELIX COMPOSE stands for smart engineering and accordingly uses highly efficient 3 Ohm technology, which harmonises perfectly with all HELIX and MATCH amplifiers while delivering a clearly perceptible gain in efficiency and maximum sound pressure.

Cenosphere paper cone

With the innovative "Cenosphere" coating, hollow spheres are incorporated into a polyamide layer that is applied to the cone. This process increases the stiffness and also optimises its internal damping. The result is an exceptionally stable yet lightweight cone that offers outstanding precision in sound reproduction.

High-tech polymer basket

All HELIX COMPOSE i7 and i3 speaker baskets are made of a high-tech polymer composite that is additionally reinforced with glass spheres. The result: maximum stability with minimal self-resonance, elimination of flux modulation of the magnet system and maximum resistance to thermal influences. Last but not least, this allows much more compact basket dimensions and therefore simpler installation in cramped mounting locations.

Natural brilliance and precise detail resolution

The 0.75" / 20 mm tweeter features an elegant black aluminium dome that strikes the perfect balance between low weight and high rigidity. Combined with the refined, highly efficient neodymium magnet system, it delivers an even more precise, clear and detailed high-frequency response. The result is natural brilliance with outstanding resolution and impressive dynamics for an exceptional listening experience.

FlexMount165 – Universal meets car-specific

FlexMount is a mounting system based on specially developed adaptor rings that allows COMPOSE FlexMount speakers to be installed in an almost unlimited number of vehicles. The universal loudspeaker effortlessly becomes a vehicle-specific loudspeaker that can be installed in the vehicle's original mounting position in an acoustically optimised way using the matching FlexMount adaptor ring (sold separately).

ProConnect – The new industry standard

The innovative ProConnect terminal is a professional, automotive-grade connector. It allows the safe use of conventional speaker cable and is also ideally designed for connection via flat plugs with HELIX WireKits, offering maximum flexibility when planning a sound system upgrade. The connection is interlocking, offers reverse-polarity protection and is electrically and mechanically highly robust.

WireKits – Plug & Play at its best

HELIX WireKits connect the COMPOSE coaxial speaker system to the original vehicle wiring harness in the most convenient way. Manufactured to the high standards of the automotive industry, these locking adaptor cables meet all the requirements of the harsh environmental conditions installers face in vehicles every day (sold separately).

Features

  • 2-way performance coaxial speaker system combining outstanding sound quality with versatile physical integration options
  • High efficiency and 3 Ohm technology for maximised amplifier power output
  • Automotive-grade ProConnect connection terminal allows the use of conventional speaker cable or a fast, secure and fail-safe connection via optionally available WireKits
  • Tweeter
    • 0.75" / 20 mm performance tweeter with black aluminium dome for accurate, pure and detailed treble response
    • High-quality aluminium dome with the perfect balance of low weight and high rigidity – for natural brilliance and fine detail reproduction
    • Refined, highly efficient neodymium magnet for high magnetic flux linearity and optimised performance
  • Midbass
    • 6.5" / 165 mm midbass with unique Cenosphere-coated paper cone for precise and detailed sound reproduction
    • High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimised ringing
    • Powerful magnet system for high efficiency and optimum impulse response
  • Crossover
    • Integrated, with 6 dB slope
  • Designed for the optionally available car-specific FlexMount165 adaptors, which allow an acoustically optimised, professional integration in the vehicle's original mounting location
  • Designed for optionally available car-specific WireKits, which allow non-destructive integration

Technical Data

Power handling RMS / Max. 100 / 150 W
Frequency response 60 Hz – 25,000 Hz
Impedance 3 Ω
Sensitivity 92 dB @ 2.83 V / 1 m; 88 dB @ 1 W / 1 m
Outer diameter 165.0 mm / 6.50"
Installation diameter 142.0 mm / 5.59"
Installation depth 60.7 mm / 2.39"
Midbass
Impedance (Z) 3 Ω
DC resistance (Re) 3.1 Ω
Resonance frequency (Fs) 72 Hz
Mechanical Q factor (Qms) 4.02
Electrical Q factor (Qes) 1.04
Total Q factor (Qts) 0.82
Compliance (Cms) 466 μm/N
Equivalent air volume (Vas) 11.5 L
Force factor (B×l) 3.8 Tm
Cone area (Sd) 133 cm²
Moving mass (Mms) 10.4 g
Mechanical resistance (Rms) 1.17 kg/s
Voice coil diameter 25 mm
Voice coil winding height 10.5 mm
Max. linear excursion (Xmax) +/- 3.2 mm
Tweeter
Voice coil diameter 20 mm
Features
Tweeter Aluminium dome and neodymium magnet
Midbass Paper cone with Cenosphere coating, ProConnect terminal and FlexMount165
Crossover Integrated, 6 dB high-pass

Compatibility

  • FlexMount165 adaptor rings (sold separately)
  • HELIX WireKits (sold separately)

In the Box

  • 2 x Ci3 C165.2FM-S3 MK2 coaxial speakers
  • 1 x Mounting material

(Ci3-C165.2FM-S3-MK2)

Power handling RMS / Max. 100 / 150 W
Frequency response 60 Hz – 25,000 Hz
Impedance 3 Ω
Sensitivity 92 dB @ 2.83 V / 1 m; 88 dB @ 1 W / 1 m
Outer diameter 165.0 mm / 6.50"
Installation diameter 142.0 mm / 5.59"
Installation depth 60.7 mm / 2.39"
Midbass
Impedance (Z) 3 Ω
DC resistance (Re) 3.1 Ω
Resonance frequency (Fs) 72 Hz
Mechanical Q factor (Qms) 4.02
Electrical Q factor (Qes) 1.04
Total Q factor (Qts) 0.82
Compliance (Cms) 466 μm/N
Equivalent air volume (Vas) 11.5 L
Force factor (B×l) 3.8 Tm
Cone area (Sd) 133 cm²
Moving mass (Mms) 10.4 g
Mechanical resistance (Rms) 1.17 kg/s
Voice coil diameter 25 mm
Voice coil winding height 10.5 mm
Max. linear excursion (Xmax) +/- 3.2 mm
Tweeter
Voice coil diameter 20 mm
Features
Tweeter Aluminium dome and neodymium magnet
Midbass Paper cone with Cenosphere coating, ProConnect terminal and FlexMount165
Crossover Integrated, 6 dB high-pass