Helix Ci7 W165FM-S3

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 / 1m
Cone 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"
Features ProConnect terminal,
FlexMount165