SKU: 28256170854

Helix Compose Ci3 K165.2FM-S2 - 6.5" 2 Ohm Component Set

$117.00 $130.00
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Description

Helix Compose Ci3 K165.2FM-S2 - 6.5" 2 Ohm Component SetHELIX Ci3 K165. 2FM S2 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

HELIX Ci3 K165.2FM-S2

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.

Stunning Highs and outstanding stability

The 0.75” / 20 mm tweeter is equipped with an innovative titan dome that combines outstanding stability with low moving mass and high inner damping as well as enormous thermal resistance - perfectly made for brilliant and compression-free treble reproduction.

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.

WireKits – Plug & Play at its best

Our WireKits realize the connection of HELIX COMPOSE speaker kit to the original wiring harness in the most comfortable way. With manufacturing according to the high standards of the automotive industry, these arrestable adaptor cables meet all requirements for the harsh environmental conditions that installers are facing in vehicles every day.

Features

  • 2-way performance speaker kit which combines outstanding sound quality with versatile physical integration options
  • High efficiency and 2 Ohms technology for maximum power output of the amplifier
  • Smart, automotive grade connectors for fail-safe and secure installation – COMPOSE Connect & ProConnect
  • Tweeter
    • 0.75” / 20 mm tweeter with titanium dome for accurate and dynamic treble response
    • Highly efficient neodymium magnet for high magnetic flux linearity
    • Compact design and various mounting options for numerous installation demands
    • Mounting pods for flush mount and angle mount included in delivery
  • 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 minimized ringing
    • Powerful magnet system for high efficiency and optimum impulse response
    • Polyurethane dustcap for optimized frequency response in the upper midrange area
  • Crossover
    • Separate, high-grade crossover with compact dimensions for easy integration
    • 6-stage tweeter level adjustment with integrated tweeter protection for optimized treble adaptation to mounting position
    • Extensively fine-tuned – with 12 dB slope for tweeter
    • Designed for optionally available, car-specific WireKits which allow a non-destructive integration
  • Designed for the optionally available car-specific FlexMount165 & FlexMount20 adaptors which allow an acoustically optimized and professional integration in the original mounting locations of the vehicle

Technical data

Power handling RMS / Max.  P 100 / 150 Watts
Frequency response   60 Hz - 25,000 Hz
Impedance Z 2 Ω
Sensitivity  SPL 94 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 2 Ω
DC resistance Re 1.8 Ω
Resonance frequency Fs 74 Hz
Mechanical Q factor Qms 3.92
Electrical Q factor Qes 0.92
Total Q factor Qts 0.74
Compliance Cms 370 μm/N
Equivalent air volume Vas 8.8 L
Force factor B*l 3.4 Tm
Cone area Sd 133 cm2
Moving mass Mms 12.5 g
Mechanical resistance Rms 1.48 kg/s
Voice coil diameter  ø 25 mm

Voice coil winding height

   11.3 mm
Max. linear excursion Xmax +/- 3.7 mm
   
Tweeter  
Impedance Z 4 Ω
Resonance frequency Fs 1800 Hz
Voice coil diameter ø 20 mm
   
Features  
Tweeter  

Ultra compact, titanium 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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28256170854

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4.5 ★★★★★
Based on 2331 reviews
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Product Reviews
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Verified Purchase
sicario
Whiting, US
★★★★★ 5
Excellent Product and Exceptional Quality and Service – Highly Recommend!
I recently purchased the LISEN Car Phone Holder Mount [Military Stable] and couldn’t be more impressed! From the moment I unboxed it, I could tell it was built to last. The design is sleek and modern, and it holds my iPhone 15 Pro Max securely without any wobbling, even during bumpy rides. The military-grade stability lives up to its promise—this mount stays firmly in place, and the adjustable clamps fit my phone perfectly. What really stood out to me was the ease of installation. It attaches to my car vent effortlessly, with no tools required, and doesn’t block any air flow, which is a huge plus. It’s also compatible with various phone models, including the latest iPhone 16, so I know it will be a long-term solution for my future upgrades. In addition to the great product, the customer service from Linsen was outstanding. They provided timely and clear communication, answering all my questions before I made the purchase. It’s rare to experience such excellent support these days, and it made my buying experience even better. If you’re looking for a reliable, sturdy, and easy-to-use car phone holder, this is the one to get! https://www.amazon.com/dp/B0CXLQDY5B Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2024
O
Verified Purchase
OBSSD
Charlottesville, US
★★★★★ 4
Well made, but not a good fit for Volvo XC40
One issue with this style of holder, is that the swing arm and holder add a fair amount of weight and extends that weight away from the vent, applying quite a bit more leverage on the vent. It may not be as much of an issue on horizontal vents, but the vertical vents on an XC40 will want to swing side-to-side with all that weight. As for the build of this particular holder, my only real gripe is the adjustment for the swing arm - after tightening the knob, there will still be some play in the arm...you have to jiggle it while tightening it down to fully secure it. The position of the release button allows one-handed removal of the phone, but really only works by pinching with your thumb on the screen. The clip for the vent accommodates relatively wide fins and the tabs can be rotated to help with stability or removed to provide more clearance (though rubberized tabs would be much more helpful).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2024
M
Verified Purchase
MRF
Belleville, US
★★★★★ 5
Good solid product
Purchased in February of 2025. Very solid item. Use it constantly in our 2011 4Runner and 2017 CX5. This unit attaches firmly to vent fins in both cars. I use iPhone for maps programs and streaming music. When traveling I'm constantly rotating device 90 degrees to use phone in portrait and landscape positions. Unit has shown no signs of losing ability to firmly hold desired position despite frequent rotations. It holds firmly where you place it. Initially I had concerns about placement on dash and blocking view of radio face, clock, MPG indicator, and other displays. Didn't take too long to realize the flexibility of this thing and the many, many positions you can place it due to multiple rotational joints. Pricing was fair. If this ever wears out, I will want to buy another.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
B
Verified Purchase
bspeakes
Draper, US
★★★★★ 5
Happy with purchase, easy to install, exactly what I needed
For many years, I'd been using a similar item with a wedge-type vent mount that finally stretched out and became unusable. When searching for a replacement, I wanted to try one with a different type of mount and I looked at many brands/types of holders. This one seemed to be the best item for the price ($8.99 at the time). So far, I'm very happy with it. I got it in a timely manner, and it was exactly as advertised. I had no problems attaching the hook to the vent fin and securing it. I use it for a GPS, and since the holder is designed to stand out away from the vent a bit, my device is easier to see than previously and details are easier to read. It wobbles, occasionally, but the holder's not loose, at all, and it doesn't affect my ability to read the device. The frame is barely just big enough to hold my GPS, but so far that hasn't been a problem. The device slides into the frame easily, locks securely, and stays put. The holder pops open at the touch of a button on the back, and the device can be removed easily, without issue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2023
M
Verified Purchase
Marooned
San Leandro, US
★★★★★ 3
Prevents me from adjusting the air vent up or down
It's true that it doesn't block the air flow. I had to put it on the left passenger side vent to retain the ability to point the driver's air vents where I want. With it over there, I have to turn my head too far to the right when I'm driving to see my phone, and the passenger can't adjust the vent up or down. Also, phone can't tilt as far left and right as other ones. Good price, unique design, easy to install, feels sturdy, holds iPhone SE fine, and doesn't block my view of the entertainment system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026

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