I'll try this again, I found some more info that may be helpful, and no answers last time
My '08 Rubi (infinity sound) has had intermittent audio trouble - speakers crackle and pop, LOUDLY, but I am 99.9% sure that the speakers are not blown. This issue is much more frequent when listening via HDD or iPod (aux jack), and almost never happens when listening to the radio. The dealer supposedly corrected this issue, diagnosed as a bad speaker, under warranty when it was still my dad's lease. It now has 39K on it, and is mine.
Any ideas what might be causing this?