For two years now, I have used a PC-sound system in my 2CV. A cheap set of one active sub(built in amp) and two speakers. Sub takes 12V in directly from car, just had to cut of the thing that transform 220V AC to 12V DC. Put in in the car with no mods to the car and used my GPS as a MP3-player. Worked great! I have the same setup in my DS.
When the sub is on, getting power from the car, and the MP3-player is not charging, the setup played perfect. But when I put the charger for the MP3-player on, there was a "crackling" noise when engine was running. Maybe electrical noise from the ignition? It was not a big problem, cause the GPS/mp3-player could go on for 4-5 ours in one charge. When it needed charging I just took a break from the music, or ignored the noise, it wasnt that bad. I have the same problem in my DS by the way. Until now just thinking it's because of the pc-speakers not belonging in a car.
Two years ago, I tried finding the cause of the noise, but gave up after no luck with the things I tried. And it was the same in two different cars. As I said, I thought the problem was the PC-soundsystem.....I mean, it's not designed for being in a car.
So now I wanted better speakers and a headunit in the car, so I dont have to fiddle with the MP3-player every time I go in and out of the car on short trips.
Pulled out the old PC-setup(took 120 sec) and put in a set of 10cm speakers in front and a headunit under the tray.(took more than 120 sec
) Switched it on and it sounded good! (An active sub is going in too, if I get this noise-thing sorted)But how long was Adam in Eve...when I started the engine, the "crackling"-noise heard with the old setup was twice as loud! Really awful! The crackling noise is varying in intensity with the revs of the engine. It's not possible to have it like this!!
Meaning, it was not the earlier PC-speakers or the MP3-player that caused it earlier!
It's driving me mad!!! I'm fed up of googling the problem....
Summary: New sound-source, new speakers, new places where power and ground is connected, new original spark plugs, new silicone HT-leads, new coil, 123-ignition and generally good condition of the whole car. Dont have any other problems with the electrics.
And yeah, I tried a noise-cancelling-thingy from a car audio specialist, and it did nothing.(That was with the old setup)
Really would like some tips on what to do here, as I have no clue anymore........
