Helix Ci3 T20FM-TI

Impedance Z 4 Ω

DC resistance Re 3.2 Ω

Frequency response 2,000 Hz - 25,000 Hz

Resonance frequency Fs 1800 Hz

Sensitivity SPL 91 dB @ 2.83V / 1m

88 dB @ 1W / 1m

Voice coil diameter Ø 20 mm

Cone material Titanium

Outer diameter 32 mm / 1.26″

Installation diameter 28 mm / 1.10″

Installation depth 9.8 mm / 0.39″



Recommended crossover frequencies for the highpass

Slope Minimum crossover frequency

6 dB/Octave 5,000 Hz

12 dB/Octave 3,500 Hz

24 dB/Octave 3,000 Hz