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Helix Compose i7 - Ci7 T20FM-SC
Helix Compose i7 High-End tweeter with hand-coated silk cone.
Helix Compose represents the best of Helix's expertise, precise manufacturing process, and top-level sound quality.
With over 30 years of experience, Helix Compose sets new standards in the car speaker market.
Installation options
Option A: Traditional flush installation
Option b: Corner mounting (with included mounting collar)
Option c: FlexMount 20 with car-specific adapters (sold separately)
Specifications:
Size without housing:
Tweeter outer Ø 32.00
Mounting Ø 27.2mm
Mounting depth: 19mm
Impedance: 4 Ohm
DC resistance: ( Re ) 3.4 Ohm
Frequency response: 1500 Hz - 30000 Hz
Sensitivity ( SPL ): 93 dB @ 2.83V / 1m, 90 dB @ 1W / 1m
Voice coil diameter: 20mm
Cone material: Silk Dome with coupling volume
Recommended crossover frequencies for the highpass:
Slope 6dB/octave│minimum crossover frequency 4000Hz
Slope 12 dB /octave│minimum crossover frequency 3000Hz
Slope 24 dB /octave│minimum crossover frequency 2500Hz