HELIX Ci5 T25FM-CA

HELIX COMPOSE. The perfect loudspeaker for every composition.

Born from the ever-increasing demands of modern vehicle technology and HELIX's signature pursuit of intelligent solutions, we made the advanced redesign of proven universal loudspeaker systems our mission. The result: the innovative HELIX COMPOSE platform, which, following the principle "designed in the car, for the car," combines classic universal loudspeakers with the advantages of vehicle-specific systems.

Innovative materials and cutting-edge technologies paired with smart, practical engineering – the best of both worlds in harmony: very high efficiency, fantastic sound quality, and enormous dynamics that fit into any vehicle. HELIX COMPOSE – Universal loudspeaker reimagined.

The sound sensation for discerning music lovers

The HELIX COMPOSE i5 series bridges the gap between the i7 and i3, created for discerning music lovers with a burning ambition for a true hi-fi experience. A fusion of phenomenal sound and unparalleled practicality: Developed with the vision of unique loudspeaker highlights that are also true problem solvers. The impedances of all loudspeakers are perfectly matched to our HELIX and MATCH amplifiers, guaranteeing maximum performance and power output at all times. Furthermore, we have implemented our COMPOSE-exclusive mechanical technologies, which offer unparalleled practical benefits. Brilliant high frequencies with excellent dispersion characteristics. Despite its larger 25 mm diameter, the Ci5 T25FM-CA boasts excellent dispersion characteristics, delivering impressive tonality and precise resolution, especially in OEM mounting positions. Thanks to its ceramic-coated aluminum dome, it offers a balanced frequency response and outstanding impulse response for unique and exceptionally realistic high-frequency reproduction. The robust aluminum housing with integrated grille provides optimal protection for the delicate dome, while the highly efficient neodymium magnet ensures linear magnetic flux. In typical COMPOSE fashion, the tweeter's integration-friendly design is also noteworthy: its compact dimensions and flexible mounting options, including various included housings, make it ideally suited for a wide range of installation requirements.

FlexMount25 – Universal meets vehicle-specific

FlexMount is a mounting system based on specially developed adapter rings, which allows the installation of COMPOSE FlexMount speakers in a virtually unlimited number of vehicles. This transforms the universal tweeter into a vehicle-specific tweeter in no time, which can be easily and acoustically optimized for installation in the vehicle's original mounting position using the appropriate FlexMount25 ring.

WireKits – Plug & Play at the highest level

Our WireKits make connecting HELIX COMPOSE components to the original wiring harness or, if necessary, connecting the speaker to the crossover easy.

Manufactured to the high standards of the automotive industry, these lockable adapter cables meet all the requirements for the harsh environmental conditions in vehicles.

Features

• 25 mm Advanced tweeter with ceramic-coated aluminum dome for a harmonious frequency response and excellent dispersion characteristics
• Sturdy aluminum housing with integrated grille for optimal protection of the delicate dome
• High-efficiency neodymium magnet for an optimally linear magnetic flux
• Compact design and various mounting options for a wide range of installation requirements
• Housings for flush and angled mounting included
• Compatible with the optional, vehicle-specific FlexMount25 adapter rings, which allow for acoustically optimized and professional integration in the vehicle's original mounting position
• Compatible with the optional WireKits for a vehicle-specific, reversible connection to the original vehicle wiring harness

Technical Data

Impedance	Z	4 Ω
DC Resistance	Re	3.2 Ω
Frequency Range		2,000 Hz - 25,000 Hz
Resonance Frequency	Fs	1800 Hz
Efficiency	SPL	94 dB @ 2.83V / 1m 91 dB @ 1W / 1m
Voice coil diameter	ø	25 mm
Diaphragm material		Aluminum with ceramic coating
Outer diameter	ø	40 mm
Installation diameter	ø	38 mm
Installation depth		11.7 mm
Recommended crossover frequencies for the high-pass filter
Slope		Minimum crossover frequency
6 dB/octave		> 4,000 Hz
12 dB/octave		>3,000 Hz
24 dB/octave		>2,500 Hz

Compatibility

• FlexMount25
• WireKits

Scope of Delivery

2 x Ci5 T25FM-CA
2 x Flush-Mount Tweeter Housings
2 x Angled-Mount Tweeter Housings
2 x Mounting Hardware
1 x User Manual