[lkillen]

I cannot imagine anything producing a nose other than your speaker!! It sounds like their may be some IO posted to your speaker that is not fully processed. Are you stock, rooted, non-standard Rom? At worst, you could be shorted but I would hope for a logic problem.

Back on my HP 4700, my speaker began to degrade and was making clicking and scratching sounds before it crapped out altogether.

Does the speaker play normal under all other conditions?

The only other thing I can think of is the screen acting as a speaker. LCD votage is induced. There is a field across the surface. I guess if it is collapsing, it could make a crackle but I would also expect either a anomaly in touch response or in visual.

I'd ride her hard and put her away wet. If it fails, use your insurance.