General Speakers, or maybe it's the doors?

[SoloNomad]

2016 MPV Doblo, I get a slight buzzing when I turn up the volume, I'm guessing it's the bass causing this. I'm happy with the quality of the sound as it's good enough for me, but I can't work out if it's the actual speakers or the door cards causing this? I'm thinking door cards as they are not the best quaility or that substantail compared to my last car - a Honda Civic. You can move the plastics easily by pushing on them. I've tried pushing on the doors to see if it stops but it doesn't make much difference. Any one got any tips or ideas on how to make the buzzing stop? Sound deadening, packing the doors with something, taping stuff up, gluing on anything? I think I just need to make the door cards a bit more solid to stop vibrations?

 

[Zizal]

Try mute stereo and if there is still buzzing there is some interfference from other source. Than antena filter can help.

 

[SoloNomad]

Yeah, I'm sure it's something to do with the radio as it goes if I turn it off. It's just trying to isolate it, at some point when I've got the time I might take the door cards off and see if there's anyway I can bolster them up a bit, stick on some thick foam or something as I think they are vibrating.