I have noticed a terrible distortion while riding at speeds of about 40mph and greater while playing the CD. There is a loud crackling through both front and rear speakers especially on the high treble end (vocals, etc.). The problem is worse with increase in volumes and I fear that this is a permanent condition due to overmodulation of the stock speakers due to the digital quality of the signal to the speakers. I am not near volume max, either. My dealer wants to replace the CD.....I do not think this will cure the problem. Any ideas?