Loud pop sound issue

[Ikarus12]

Hello,

First, sorry to post here for car audio but i need to talk with audiophile person wich understand lot of sound.

 

I have an issue with my new car audio setup , when i change source or i have very low volume i ear a loud pop from all the speaker.

I still use the stock amp and a pioneer head unit wired on rca preamp output , its not a hardware problem i think, i have a good quality hardware

More like a signal incompatibility when the head unit cut output sound.

I know that my amp use balanced signal (see attached) , i don't know about the head unit DEH-80PRS

Maybe this can be the issue ? Any way to resolve easily the issue ?

 

Thanks for any response

 

[Ralf11]

how do you change sources?

[Ikarus12]

Simply pressing the source buttons, it's fully numeric

[Ralf11]

ok, if the unit is internally using switches, then there may be dirt inside esp. if this used to work ok

 

try an electronic cleaning spray