John P. (TT 225)

Hi,

If you have it, I would really appreciate some help.

http://www.bentleypublishers.com/aud...-b8-ebahn.html

I will probably replace the Bang & Olufsen sub with an aftermarket one and amp in my B8 S5.

My car won't have nav, so I don't have the MOST fiberoptic hurdle that others have. In other words, cars equipped like mine would seem to have standard, low-level analog signal coming from the receiver that can be tapped to provide signal for an aftermarket amp. This is a much better approach than tapping the speaker (high-level) wires because those have already been filtered (I have to imagine the range they're sending the B&O "sub" is high-passed at 50hz or something, and low-passed really high) and are noisy.

If anyone has access to a Bentley repair manual, I would REALLY appreciate any information it gives about the wires coming out of the receiver and going to the Bang & Olufsen amp in the trunk.