I own a 2004 Benz C230 Kompressor Sport with a standard Bose sound system. A couple of weeks ago as I was listening to music, suddenly the sound cuts out and these weird crackling, booming and humming sounds start emanating from the speakers, sometimes from multiple speakers at once and sometime in succession starting from the font and migrating to the back ones. When I turned off the radio the sounds continued. Then the next day everything returned to normal and then it happened again just as I was pulling into a parking spot. I turned the car off, but the noises continued. I have absolutely no idea what may be happening, right now the last time it happened, there is just a continuous humming and whining sound that appears to rise in pitch as I accelerate. This has been really baffling as I cannot find any information in regards to this problem.
Thanks in advance.