I recently purchased the kenwood kdc-bt30 for my 04 Punto active sport, I had the volume quite high and it was working fine then I turned it down soon after (not even 2 mins) and I got the 'Protect' error on the screen, which appears when you have a speaker out, i'm just wondering will both of the door speakers need replacing as they are both crackly when the volume is high, but the left seems better than the right so I don't know if it's the left or right.

If I do replace the door speakers can anyone recommend any decent ones which won't 'blow' when I put the volume up?

Or is there any other alternative to get them working again?