With notable influence from the sister brand BRAX and our uncompromising high-end philosophy, only the highest quality components, such as the proprietary, handmade UHD (Ultra High Damping) paper cone, are used in the i7 series. manufactured in a particularly complex process, this cone guarantees an optimal frequency- as well as the best possible impulse response for incomparable music enjoyment.
HELIX Ci7 " 6.5 Midwoofer
Technical data
Power handling RMS / Max. P 150 / 225 Watts Impedance Z 3 Ω DC resistance Re 2.9 Ω Frequency response 50 Hz - 3,500 Hz Resonance frequency Fs 60 Hz Mechanical Q factor Qms 3.00 Electrical Q factor Qes 0.68 Total Q factor Qts 0.55 Compliance Cms 480 µm/N Equivalent air volume Vas 11.6 L Force factor B*I 4.8 Tm Sensitivity SPL 92 dB @ 2.83 V / 1m
88 dB @ 1W / 1mCone area Sd 131 cm² Moving mass Mms 14.8 g Cone material Ultra high damping (UHD) crafted paper cone Mechanical resistance Rms 1.83 kg/s Voice coil diameter ø 37 mm Voice coil winding height 13.4 mm Max. linear excursion Xmax +/- 3.7 mm Outer diameter ø 165 mm / 6.5" Installation diameter ø 142 mm / 5.59" Installation depth 65.8 mm / 2.59"