Helix S 1T - 1" Silk Dome Tweeter



A tweeter for the good sound – Only the tweeters provide the perfect sound experience in a sound system.
The coated silk dome and the highly efficient neodymium magnet of the S 1T implicate an unique sensitivity in the high-frequency reproduction and crystal clear sound. The high-grade mounting cup made from anodized aluminum with removeable grille offers optimum protection of the dome and impresses in an exclusive HELIX design.

The special highlight: The tweeter unit can be taken out of the mounting cup. Thus, the already very compact dimensions can be reduced and offers optimum preconditions for easy integration into the vehicle.

One thing´s for sure: The new S 1T tweeters turn every sound system into a "high"-light!

  • 1” / 25 mm tweeter with high efficient neodymiummagnet and coated silk dome for balanced, natural sound reproduction and lowest compression effects
  • Mounting cup made from anodized aluminum with removable protection grille in exclusive HELIX design
  • Lowest possible production tolerances and solely use of best materials
  • Including installation material
Power RMS / max. P 100 / 200 Watts
(highpass > 3,000 Hz at 12 dB/Oct.)
Impedance  Z 4 Ω
DC resistance  Re 3.4 Ω
Frequency response   2,500 Hz - 25,000 Hz
Resonance frequency  Fs 1,600 Hz
Efficiency 1 W / 1 m SPL 91 dB
Voice coil diameter ø 25 mm
Cone area  Sd 4.9 cm²
Moving mass  Mms 0.3 g
Cone material   Coated silk dome
Outer diameter ø 51 mm / 2.0"
Installation diameter ø 45 mm / 1.77"
Installation depth   14 mm / 0.55"
Recommended crossover frequencies for the highpass    
Slope   Minimum crossover frequency
6 dB/Octave   4,000 Hz
12 dB/Octave    > 3,000 Hz
24 dB/Octave   > 2,500 Hz

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