HELIX Ci7 C165.2FM-S3 6.5" Coaxial Speaker Set, FlexMount | 3Ω

165 mm high-end coaxial coincident speaker with 3 Ω impedance, silk dome tweeter with coupling volume and FlexMount technology

SKU: Ci7 C165.2FM-S3

$1,495.00

Description

HELIX Ci7 6.5" 2-Way - High-End Component Speaker Set, FlexMount | 3Ω

6.5-inch high-end coaxial coincident speaker with 3 Ω impedance, silk dome tweeter with coupling volume and FlexMount technology

HELIX Ci7 C165.2FM-S3

Born out of the increasingly demanding challenges of modern automobile technology. The HELIX Ci7 C165.2FM-S3 - typical pursuit of intelligent solutions. Helix made the progressive redesign of proven universal speaker systems its mission. The result:  an 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.

HELIX Ci7 C165.2FM-S3 – High-end Car Hifi made in Germany

The HELIX COMPOSE i7 series represents uncompromising high-end for an outstanding sound experience in the automobile. With clear influence from the high-end sister brand BRAX, HELIX manufactures the i7 speaker series entirely in Germany and optimises it for uncompromising musical enjoyment.

In addition, HELIX perfectly matches all speaker impedances to HELIX and MATCH amplifiers, guaranteeing maximum performance at all times. In addition, HELIX COMPOSE introduces four new mechanical technologies that offer unbeatable practical benefits.

High efficiency

HELIX COMPOSE equals smart engineering and accordingly implements highly efficient 3 Ohms technology, which perfectly harmonises with all HELIX and MATCH amplifiers while also delivering a clearly perceptible increase in efficiency and maximum sound pressure.

High-End Coaxial Coincident Speaker

The Helix Ci7 C165.2FM-S3 is a unique coaxial speaker that combines the best of the Ci7 W165FM-S3 High-End midbass driver and the Ci7 T20FM-SC high-end tweeter. Due to its complex design, the Ci7 C165.2FM-S3 is not just a simple coaxial speaker but a true coincident driver.

This advantage is that the sound from both drivers is produced at exactly the same time, turning the speaker into a point source. This results in extremely precise and time-coherent sound reproduction, which is particularly advantageous in acoustically challenging environments, making this speaker another smart, practical solution in the COMPOSE platform.

With the i7’s renowned UHD paper cone and the silk-dome tweeter, incl. the integrated coupling volume damped with pure lamb’s wool, the Helix C165.2FM-S3 delivers an exceptional combination of powerful, precise midbass and brilliant, smooth treble response.

The alignment of the drivers along the same sound axis ensures optimal phase coherence and a consistent sound image. This makes the Helix C165.2FM-S3 a versatile solution for audiophiles who want to experience a coherent soundstage from a single speaker position, while still benefiting from the intelligence and integration-friendly design of the COMPOSE platform.

High-tech polymer basket

All HELIX COMPOSE i7 and i3 speaker baskets are made of a high-tech polymer composite and additionally reinforced with glass spheres. The result: maximum stability with minimal self-resonance, eliminating flux modulation of the magnetic system and offering maximum resistance to thermal influences. Last but not least, this allows for much more compact basket dimensions. Thus enabling simplified installations in cramped conditions.

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 transforms into a vehicle-specific loudspeaker. Allowing you to easily install it in the vehicle’s original position with acoustically optimised performance using the matching FlexMount adaptor ring.

ProConnect – The new industry standard

Helix's innovative ProConnect midbass terminal is the new industry standard. A professional, automotive connector that provides a safe connection to our WireKits. It also allows the use of conventional speaker cables or car-specific adaptor cables via flat plugs. While giving maximum flexibility in the design of the sound system upgrade. Furthermore, the connection system interlocks securely, provides reverse-polarity protection, and withstands high levels of electrical and mechanical stress.

WireKits – Plug & Play at its best

Helix WireKits realise the connection of the COMPOSE coaxial speaker system to the original wiring harness. Manufactured to the high standards of the automotive industry. These arrestable adaptor cables meet all requirements for the harsh environmental conditions installers face in vehicles every day.

Scope of delivery

  • 2 x Ci7 C165.2FM-S3
  • 2 x Tweeter connection cable
  • 2 x Midbass connection cable
  • 1 x Mounting material
  • 1 x Instruction manual
  • 2-way high-end coaxial coincident speaker which combines outstanding sound performance with versatile physical integration options
  • Concentric speaker as a true point source for superior sound dispersion & unparalleled audio precision
  • Tweeter
    • Super-wide dispersion 0.75” / 20 mm high-end silk dome tweeter with coupling volume for the lowest possible resonance frequency
    • Exceptionally lightweight and fine-meshed silk dome ensures brilliant and smooth treble response
    • Integrated, dampened coupling volume allows a low crossover frequency, thanks to its low resonance frequency
    • 4 Ohms impedance
  • Midbass
    • 6.5" / 165 mm midbass with Ultra High Damping (UHD) crafted paper cone for outstanding impulse response and unmatched frequency response
    • High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimised ringing
    • Large 1.46” / 37 mm voice coil ensures minimum thermal compression and high power handling
    • High efficiency and 3 Ohms technology for maximised power output of the amplifier
    • Automotive-grade ProConnect connection terminal allows the use of conventional speaker cables or a fast, secure and fail-safe connection via optionally available WireKits
  • Designed for the optionally available car-specific FlexMount165 adaptors, which allow an acoustically optimised and professional integration in the original mounting location of the vehicle
  • Designed for optionally available, car-specific WireKits, which allow a non-destructive integration
  • Made in Germany

Note: The speaker does not have an integrated crossover. For active operation, two amplified DSP channels per speaker are required, and it is essential to set a high-pass filter for the tweeter in the pre-connected DSP or DSP amplifier. Alternatively, the crossover Ci7 FX-UNI.2 is available separately.

Power handling RMS / Max.  P 150 / 225 Watts
Frequency response   50 Hz - 30,000 Hz
Impedance Z 3 Ω
Sensitivity  SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø 165.0 mm / 6.50”
Installation diameter ø 142.0 mm / 5.59”
Installation depth    65.8 mm / 2.59”
   
Midbass
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 59 Hz
Mechanical Q factor Qms 3.99
Electrical Q factor Qes 0.64
Total Q factor Qts 0.55
Compliance Cms 572 μm/N
Equivalent air volume Vas 13.3 L
Force factor B*l 4.7 Tm
Cone area Sd 131 cm2
Moving mass Mms 13.0 g
Mechanical resistance Rms 1.21 kg/s
Voice coil diameter  ø 37 mm
Voice coil winding height   13.4 mm
Max. linear excursion Xmax +/- 3.7 mm
   
Tweeter  
Impedance Z 4 Ω
Voice coil diameter ø 20 mm
   
Features  
Tweeter   Silk dome with coupling volume
Midbass   Ultra high damping (UHD) crafted paper cone, ProConnect terminal
and FlexMount165
Crossover   2-way active: two amplified DSP channels per speaker required
2-way passive: i7 FX-UNI.2 optionally available

Compatibility

Scope of delivery

2 x Ci7 C165.2FM-S3
2 x Tweeter connection cable
2 x Midbass connection cable
1 x Mounting material
1 x Instruction manual

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