Helix Ci3 K165.2FM-S2 - 2Ohm

Power handling RMS / Max. P 100 / 150 Watts
Frequency response 60 Hz - 25,000 Hz
Impedance Z 2 Ω
Sensitivity SPL 94 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø
Tweeter: 32.0 mm / 1.26”
Midbass: 165.0 mm / 6.50”

Installation diameter ø
Tweeter: 32.0 mm / 1.26”
Midbass: 142.0 mm / 5.59”

Installation depth
Tweeter: 9.8 mm / 0.39”
Midbass: 60.7 mm / 2.39”

Dimensions crossover
103.3 x 50.4 x 25.0 mm /
4.07 x 1.98 x 0.98”

Midbass
Impedance Z 2 Ω
DC resistance Re 1.8 Ω
Resonance frequency Fs 74 Hz
Mechanical Q factor Qms 3.92
Electrical Q factor Qes 0.92
Total Q factor Qts 0.74
Compliance Cms 370 μm/N
Equivalent air volume Vas 8.8 L
Force factor B*l 3.4 Tm
Cone area Sd 133 cm2
Moving mass Mms 12.5 g
Mechanical resistance Rms 1.48 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height

11.3 mm
Max. linear excursion Xmax +/- 3.7 mm

Tweeter
Impedance Z 4 Ω
Resonance frequency Fs 1800 Hz
Voice coil diameter ø 20 mm

Features
Tweeter
Ultra compact, titanium dome, neodymium magnet and FlexMount20

Midbass
Paper with Cenosphere coating, ProConnect terminal and FlexMount165

Crossover
Tweeter: 12 dB highpass, protection and level adjustment
Midbass: 6 dB lowpass