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Helix CB C570.2-S3 - 3Ohm
Helix Compose Basic 5″x7″ - 2-way coaxial speaker.
Helix Basic is the most affordable model in the Compose series and offers a great price/quality ratio!
Like other Compose models, Basic was developed in-car, which means it has been optimized specifically for in-car use.
One of the key elements of the Compose series is a patented mounting system called FlexMount, which is based on specially developed speaker adapters.<br>
This technology allows you to install Compose Basic speakers in an almost infinite number of car models by simply changing the adapter ring that fits your car.
Specifications:
Power handling RMS / Max. P 70 / 105 Watts
Frequency response 60 Hz to 22,000 Hz
Impedance Z 3 Ω
Sensitivity SPL 92 dB @ 2.83V / 1m
88 dB @ 1W / 1m
Outer diameter ø 228.8 x 144.0 mm / 9.01 x 5.67”
Installation diameter ø 181.5 x 125.5 mm / 7.15 x 4.94”
Installation depth 58.4 mm / 2.30"
Midrange
Impedance Z 3 Ω
DC resistance Re 3.0 Ω
Resonance frequency Fs 67 Hz
Mechanical Q factor Qms 3.64
Electrical Q factor Qes 1.04
Total Q factor Qts 0.81
Compliance Cms 399 μm/N
Equivalent air volume Vas 12.4 L
Force factor B*l 4.2 Tm
Cone area Sd 149 cm2
Moving mass MMS 14.3 g
Mechanical resistance Rms 1.64 kg/s
Voice coil diameter ø 25 mm
Voice coil winding height
8.9 mm
Max. linear excursion Xmax +/- 2.5 mm
Tweeter
Voice coil diameter ø 20 mm
Features
Tweeter Silk Dome and neodymium magnet
Midbass
Injected polypropylene cone
Crossover Integrated, 6 dB highpass