Helix Ci3 K165.2FM-S3 MK2 - 3Ohm

EAN: 4057204326715
Ci3 K165.2FM-S3 MK2

6.5″
2-Way speaker kit
3 Ohm
150W
FlexMount compatible

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1 pcs
299,00 €
Weight: 2.70 kg
Arriving in stock: 10.10.2025
Any questions? Contact us[email protected]
Description
Specifications
HELIX Ci3 K165.2FM-S3 MK2
HELIX COMPOSE. The perfect speaker for any composition.
Born out of the increasingly demanding challenges of modern automobile technology and the HELIX-typical pursuit of intelligent solutions, we made the progressive redesign of proven universal speaker systems our mission. The result: our innovative HELIX COMPOSE platform that, according to 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 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 component systems give you everything you would expect from a great 2-way system: A first-class sound experience that, thanks to the use of high-quality materials and its particularly smart engineering, conveniently finds its way into the automobile. All components harmonize perfectly and form an ideal team with our HELIX and MATCH amplifiers, guaranteeing maximum performance and power output at all times. Furthermore, we implemented our new, mechanical technologies with a clear focus on safety during connection and operation for the purpose of creating ideal conditions for the integration into the vehicle with maximum compatibility.

High efficiency
HELIX COMPOSE equals smart engineering and accordingly implements highly efficient 3 Ohm technology, that perfectly harmonizes with all HELIX and MATCH amplifiers and at the same time allows a clearly perceptible plus in efficiency and maximum sound pressure. Certain models will also be available as an optional 2 Ohm variants, assuring the absolute maximum performance and power of the respective speaker in combination with the appropriate amplifier.

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 optimizes 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, which has been additionally reinforced with glass spheres. The result: maximum stability with minimal self-resonance, while also eliminating flux modulation of the magnetic system and maximum resistance to thermal influences. Last but not least, this allows for much more compact basket dimensions and thus simplified installations in cramped installation conditions.

Natural brilliance and precise detail resolution
The 0.75” / 20 mm tweeter features an elegant black aluminum 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.

Perfectly separated
Our Ci3 FX-UNI.2 crossover is designed for the ideal use with our HELIX COMPOSE i3 components, and thus for the COMPOSE-typical, professional integration into the vehicle. It offers a 6-stage tweeter level adjustment with 12 dB slope for optimal adaptation to the installation position as well as an integrated tweeter protection. In addition, no effort was spared in the complex tuning of the crossover for the best possible distribution of the frequency band and a harmonious sound image. Thanks to its compact dimensions, the Ci3 FX-UNI.2 is perfectly suited for installation in tight spaces and is furthermore compatible with our COMPOSE Connect and WireKit technologies for a safe and fool-proof connection according to automotive standards.

COMPOSE Connect
Kiss tinkering and soldering goodbye. Compose Connect is the sophisticated plug-in connection that considerably simplifies car audio installation in conjunction with HELIX COMPOSE components. Proprietary plastic housings into which standard flat plugs and couplings can be snapped, establish an absolutely safe connection in accordance with automotive standards that prevents any polarity reversal.

FlexMount20 & FlexMount165 – Universal meets car-specific
FlexMount is a mounting system based on specially developed adaptor rings, allowing the installation of COMPOSE FlexMount speakers in an almost infinite number of vehicles. Thus, the universal loudspeaker effortlessly becomes a vehicle-specific loudspeaker, that can be easily installed in the original installation position of the vehicle in an acoustically optimized way with the matching FlexMount adaptor ring.
Technical data
Power handling RMS / Max. P 100 / 150 Watts
Frequency response 60 Hz - 25,000 Hz
Impedance Z 3 Ω
Sensitivity SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø
Tweeter: 32.0 mm / 1.26”
Midbass: 165.0 mm / 6.50”

Installation diameter ø
Tweeter: 32.0 mm / 1.26”
Midbass: 142.0 mm / 5.59”

Installation depth
Tweeter: 9.8 mm / 0.39”
Midbass: 60.7 mm / 2.39”

Dimensions crossover
103.3 x 50.4 x 25.0 mm /
4.07 x 1.98 x 0.98”


Midbass
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 70 Hz
Mechanical Q factor Qms 4.17
Electrical Q factor Qes 1.05
Total Q factor Qts 0.84
Compliance Cms 454 μm/N
Equivalent air volume Vas 11.2 L
Force factor B*l 4.0 Tm
Cone area Sd 133 cm2
Moving mass Mms 11.3 g
Mechanical resistance Rms 1.18 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height

10.5 mm
Max. linear excursion Xmax +/- 3.2 mm

Tweeter
Impedance Z 4 Ω
Resonance frequency Fs 1800 Hz
Voice coil diameter ø 20 mm

Features
Tweeter
Ultra compact, aluminum dome, neodymium magnet and FlexMount20

Midbass
Paper with Cenosphere coating, ProConnect terminal and FlexMount165

Crossover
Tweeter: 12 dB highpass, protection and level adjustment
Midbass: 6 dB lowpass

Compatibility
FlexMount20
FlexMount165
WireKits

Scope of delivery
2 x Tweeter Ci3 T20FM-AL MK2
2 x Midbass Ci3 W165FM-S3
2 x Crossover Ci3 FX-UNI.2
2 x Lowpass cable crossover Ci3 FX-WLP.2
2 x Tweeter mounting accessories
2 x COMPOSE Connect Kit
1 x Mounting material