Helix Ci5 T25FM-CA

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 / 1m
Voice 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