Lancia Klub Polska

hi everyone, I have a Lancia Lybra with ICS no navi, I have mounted a Parrot CK3000 Evolution via telephone holder which is located in the central tunnel for power and mute while the ISO audio cable behind ICS. during the call there is always a hissing noise in the background can you help me? Thank you

Does the sound intensity change with engine speed?
These are probably interference from the car's electrical system.

hi topcio,
no, the background hiss does not vary with speed, it always remains constant, as soon as possible i will try to upload a short video