Helix Compose i7- Ci7 T20FM-SC - Tweeter 20mm - silk dome

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HELIX CI7 T20FM-SC Pair of High-End Tweeters

The HELIX COMPOSE i7 series represents uncompromising high-end performance for an exceptional in-car sound experience. With clear influence from sister brand BRAX, the i7 speaker series is entirely crafted in Germany and optimized for uncompromising musical enjoyment. All speaker impedances are perfectly matched to our HELIX and MATCH amplifiers, ensuring maximum performance every time. Furthermore, HELIX COMPOSE introduces four new mechanical technologies that offer unbeatable practical benefits.

The i7 tweeter features a fine-mesh silk dome with Acronal viscoelastic coating on both sides, ensuring a brilliant and uniform high-frequency response. Furthermore, the inclusion of pure lambswool and the damped coupling volume enable a very low resonance frequency and deep acoustic coupling.

FlexMount is a mounting system based on specially developed adapter rings that allows the FlexMount COMPOSE speakers to be installed in a virtually unlimited number of vehicles. This effortlessly converts the universal tweeter into a vehicle-specific tweeter, which can be easily installed in the vehicle's original mounting position for acoustic optimization using the FlexMount20 adapter ring.

CI7 T20FM-SC Features

High-end 0.75" / 20 mm silk dome tweeter with super-wide dispersion and coupling volume for the lowest possible resonance frequency

The exceptionally lightweight, fine-mesh silk dome ensures a brilliant and smooth treble response

Highly efficient neodymium magnet for high magnetic flux linearity

The integrated, damped coupling volume enables a low crossover frequency thanks to its low resonance frequency

Sturdy, billet aluminum housing

Compact design and various mounting options to meet a wide range of installation needs

Mounting brackets for flush and corner mounting are included

Designed for the optionally available FlexMount20 adapters, which allow for acoustically optimized and professional integration into the vehicle's original mounting location.

Made in Germany

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HELIX CI7 T20FM-SC Technical Specifications

• Impedance Z 4 Ω
• DC Resistance Re 3.4 Ω
• Frequency Response 1,500 Hz - 30,000 Hz
• Resonant Frequency Fs 950 Hz
• SPL Sensitivity 93.0 dB @ 2.83 V / 1 m
• 90.0 dB @ 1 W / 1 m
• Voice Coil Diameter Ø 20 mm
• Cone Material Silk dome with coupling volume
• Outer Diameter 32 mm / 1.26 in
• Mounting Diameter 27.2 mm
• Mounting Depth 19 mm
• Recommended Crossover Frequencies for High-Pass
• 6 dB/Octave > 4,000 Hz
• 12 dB/Octave > 3,000 Hz
• 24 dB/Octave > 2,500 Hz