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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. is the premier BMW Forum on the internet. Registered Users do not see the above ads.
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Old 01-09-2004, 11:38 AM   #1 (permalink)
Join Date: Jan 2004
Posts: 1
Marpa is an unknown quantity at this point

I have a 320F1 2004 that comes with the BWM business CD and I installed some sound to it but the problem Iím having is that I have a noise that comes from the stereo to the amplifier. I have a Line Output Converter because the stereo doesnít have preamp outputs and I think thatís 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

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Old 01-11-2004, 09:36 AM   #2 (permalink)
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Join Date: Dec 2003
Location: Nassau, Bahamas
Posts: 46
BEX is an unknown quantity at this point
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.

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