Hello everyone and I'm sorry for writing in English.
I do speak some German but it will be a lot easier for me in English.
I'm brand new Insignia Sport Tourer owner and I'm very happy with it. It has BOSE Sound System. To be honest, I had Audi A6 1996y with Bose and it was a lot better than this in the Opel - it was more richer, warm and room filling.
Anyways - I have this problem with the Insignia.
When travelling with higher speed (>110km/h) a noise(sizzle) starts coming from the front door speakers. It can be heard ever with the music off. It is not the I can hear it but when the music plays it alters the sound and makes it really bad.
I tried switching almost everything which made sense but no-go - as soon as I pass 110km/h the noise starts - and it gets louder with the speed.
Anyone has any idea?
Thanks again for the understanding and the English language!