02 Ram Horn issue

OK.. I know this sounds stupid... BUT... My big Beefy intimdating Ram sounds like a damn clown car coming down the road when I hit my horn (it is a real high pitched sound) .... So, when I have an idiot turn in front of me and blow my horn, they most likely just start laughing extremly hard.... hahah...

Seriously, I have had this problem once before .. it seems like I changed something to fix another problem and all of a sudden the horn was its "throaty" self again...

any ideas??

Thanks!
Jon