Owner's Guide

ENGLISH 15
Symptom Solution
No sound from a device
connected by the back-up
audio cable
Poor sound quality from a
device connected by audio cable
Battery won’t charge
• Secure the ends of the back-up audio cable.
• Increase the volume on your headphones, your mobile device and music source.
• Connect another device (see page 11).
• Secure the ends of the back-up audio cable.
• Connect another device (see page 11).
• Secure the ends of the USB charging cable.
• Try another charging source.
• If your headphones have been exposed to high or low temperatures,
let the headphones return to room temperature and try charging again.
Noise cancelling function
doesn't work
• Make sure that the noise canceling function is turned on.
• Are the ears all wrapped and re-equipped.Adjust the earpad position to fit your ears.If the
earmuffs are loose, re-set the ear.
• Eliminate low frequency noise? The noise canceling function is effective in low frequency
ranges such as airplanes, trains, offices, near air-conditioning, and is not as effective for
higher frequencies, such as human voices.
Cowin Active Noise Cancelling
• Cowin Active Noise Cancelling (ANC) mainly focus on cancelling out lower frequency
sounds like engines, aviation environment, trains, traffic noise etc, so our valuable
customers can focus on their music, movies, or books without being disturbed by outside
noises. Our ANC headphones incorporate a microchip that measures ambient sound and
generate a waveform that is exact negative of the ambient sound and mix it with any audio
signal our customers desires. Making it possible to listen to audio content without raising
the volume excessively. Please do note, ANC does not cancel out noises like snoring,
talking, music or high frequency.