Helix C1T

Power RMS / max. P 100 / 150 Watts (highpass 3,000 Hz at 12 dB/Oct.) Impedance Z 4 Ω DC resistance Re 3.4 Ω Resonance frequency Fs 820 Hz Efficiency 1 W / 1 m SPL 90 dB Voice coil diameter ø 25 mm Cone area Sd 4.9 cm² Moving mass Mms 0.35 g Cone material Silk dome Outer diameter ø 50 mm / 2.00″ Installation diameter ø 44 mm / 1.73″ Installation depth 20.5 mm / 0.81″ Recommended crossover frequencies for the highpass Slope Minimum crossover frequency 6 dB/Octave 3,500 Hz 12 dB/Octave 2,500 Hz 24 dB/Octave 1,800 Hz.