Audi Symphony system
#11
it is possible to connect your h/u and power all of your speakers.
most people just don't know how. when I get to the library tonight in a hour or so, I will post how to. I have a few things to finish up here at work.
#13
you can install just the HU/amp/sub now
but you'll have to do one of two things - either make an rca adapter so you can hook up rca preouts to the factory wiring to run the rear signal through the factory sub or run speaker wires from the h/u to the rear amp and bypass it by tapping into the outputs of that amp