The larger diameter of 25 mm / 1”, the Ci5 T25FM-CA has an excellent wide dispersion and off-axis response, allowing the creation of an impressive sound image and soundstage – even in OEM installation spots. With its ceramic-coated aluminum dome, it features a balanced frequency response and excellent decay characteristics. As a result, high frequencies are reproduced even more clearly and realistically.
HELIX Ci5 Tweeter
Technical data
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 94.0 dB @ 2.83V / 1m
91.0 dB @ 1W / 1mVoice coil diameter Ø 25 mm Cone material Aluminum with ceramic coating Outer diameter 40 mm / 1.57" Installation diameter 38 mm / 1.50" Installation depth 11.7 mm / 0.46" 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





























