Speaker static after car wash
 

I was just wondering has anyone else had a problem with their speakers that static after a car wash? The first time my speakers started the static I thought it was because of me, but I don't play music that loud and it was right after a car wash. It lasted about 3 days then fixed itself. This past time I washed my car I noticed it started static again and it's been going on for about 2 weeks now. Is this a issue that anyone else has had? I just purchased this 2005 A6.

Can you remove the door card and check if the speaker is getting wet?