My driver side in-door speaker is acting up and i am not sure where to begin with it. I isolated the speaker by adjusting the balance and the fader and it will produce a extremely quiet and muffled sound while having a crackle in it after turning up the volume 3/4 of the way. Does this mean i need a new speaker or do I just have a bad connection? My car is a 2007 LT. Any advice on a replacement speaker and installation tips would be great. Thanks!

 

Could be blown or a loose conection, electronically speaking. Open it up and try to see if the conections are loose or coroded. And by it I mean the door panel, not the speaker assembly haha.

 

I had the same problem with passenger side. I replaced both doors with Pioneer speakers and it sounds great. P.S you don't need to buy two way speakers because there is a separate tweeter

 

It can be anything from a bad connection to a dry rotted-damaged cone surround. My '02 Grand Am had cone surrounds that fell apart if you would breathe on them. I was going to get a repair kit but instead just replaced them.