Business CD to Amp noise - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
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#1 (permalink) Old 01-09-2004, 11:38 AM
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I have a 320F1 2004 that comes with the BWM business CD and I installed some sound to it but the problem I’m having is that I have a noise that comes from the stereo to the amplifier. I have a Line Output Converter because the stereo doesn’t have preamp outputs and I think that’s what making the sound. The strange thing is that the noise is like a small banging and if I accelerate it stops. Does anyone know a way to connect the BMW Business CD to an amplifier in a way that I can get rid of the sound?

* I did pass the cables in the left side so it does not have to do with the power line going to the battery.
* I already tried some line filters and it made it better but I can still hear the noise.

If it helps what I installed was:
Two pairs of Boston Pro 6.5 speakers
PCX - 5800 Precision power amp
Boston Generator Sub
Blitzsafe Adapter
Roady XM Satellite Radio

Thanks
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#2 (permalink) Old 01-11-2004, 09:36 AM
BEX
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I've seen brake modulator feedback in Ford Expeditions. Have no experience in the E46 so I am just throwing this out as an idea.

Chris
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