Helix Compose Basic 87mm / 3,5″ - 2-way coaxial speaker.
Helix Basic is the most affordable and best value for money model in the Compose range!
As with the other Compose models, the Basic is designed to sit in the car, which means it is optimised specifically for car use.
Power handling RMS / Max. P 40 / 60 Watts
Frequency response 110 Hz - 22,000 Hz
Impedance Z 3 Ω
Sensitivity SPL 88 dB @ 2.83V / 1m
84 dB @ 1W / 1m
Outer diameter ø 86.9 mm / 3.43"
Installation diameter ø 79.0 mm / 3.11"
Installation depth 42.0 mm / 1.65"
Midrange
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 92 Hz
Mechanical Q factor Qms 3.80
Electrical Q factor Qes 0.74
Total Q factor Qts 0.62
Compliance Cms 820 μm/N
Equivalent air volume Vas 1.5 L
Force factor B*l 2.9 Tm
Cone area Sd 36 cm2
Moving mass Mms 3.6 g
Mechanical resistance Rms 0.52 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height
8.3 mm
Max. linear excursion Xmax +/- 2.2 mm
Tweeter
Voice coil diameter ø 13 mm
Features
Tweeter PEI dome and neodymium magnet
Midbass &br />
Injected polypropylene cone
Crossover Integrated, 6 dB highpass
Scope of delivery
2 x CB C87.2-S3
1 x Mounting material
