Re: Crackling noise in door speakers?
Bad ground or partial short in speaker wires? I had a bad ground that would make all kinds of weird noise and crackling at low volume and went away as the volume turned up, finally the HU would power off at near full volume. After I cleaned up my ground all the problems went away, worth a shot.
Definitely replace the speakers as soon as you can.
'65 VW Bus
MA Hippo 122, (2) Aura Sound 8's, (2) SoundStream 6.5 coax, (2) Alpine Type-S 6x9's [rear fill], MBQ DSC1500.1D, RF 501X
'02 BMW 330xi (AWD coupe), every option
Harman/Kardon 12-speaker System Option + Dayton HO D4 10" and PPI Ion 650.1 in sealed box
And many more car audio goodies in storage