i replaced the tweeter with a brand new OEM one and it still crackles. It really only does it with the XM radio or Ipod. has anyone had this problem? could it be the Amp, Head Unit? any clue? thanks

 

okay, when i just listened to it again, the crackle is coming from both the driver's door speaker and the tweeter. i didn't try replacing the door speaker yet. if the door speaker was bad would it also throw off the tweeter too? i read that there are no crossovers, so if this is true, what else could i try besides replacing that door speaker which i plan on doing?