My '94 C280's 2 subwoofers (however small they may be) began acting up about 1 month ago. ONLY those two speakers on the rear shelf started making a loud crackling noise after I had washed my car. It went away by the next time I drove the car, so I figured maybe a wire had taken on some moisture when I washed the car. However, in the past weeks, these speakers began making this noise almost continuously (to my chagrin). Frustrated, I ordered a Blaupunk "Heidelberg" CD52 from Crutchfield.com, thinking that this would solve that problem (and because the volume knob on the Becker had been malfunctioning since I got the car). I was very frustrated to find very little information on fitting for my vehicle, but had heard good things about Blaupunkt stereos, so I decided to take a chance. The radio arrived (without Becker head-unit removal tools), so I had to drive a total of 50 miles to the nearest dealership to have the radio removed. I was quite pleasantly surprised, however, to find that the factory plugs fit the stereo perfectly. Apparently, this was a hasty conclusion. The radio ran fantastically when the engine was off. Conversely, when I first got into the car to meet a friend for dinner, I was very surprised to hear a high-pitched wailing noise that varied directly in pitch with the RPM's of my engine. It does not increase proportionately with the volume controls, but becomes worse as accessories (i.e.-headlights, seat-heaters, window controls, window defroster, etc...) are activated. Can anyone suggest a solution to my problem? I am a high-school student in Florida with very little money for costly repairs, and this is my first do-it-yourself project concerning my vehicle's audio system. A friend suggested to me that perhaps my amplifier had gone bad, but I'm not even sure that I have one, unless it comes factory-equiped with one. ANY AND ALL COMMENTS OR SOLUTIONS ARE WELCOME! Thank you for your time.
Charles Harnish
1994 MB C280
10-23-2004, 09:33 PM
Linear Mode
