Re: Aftermarket Sub and Amp
Did you manage to get your amp working? I would have suggested using a line out converter, a half decent one with a remote trigger something like an audison sli2. Not sure if your planning on tapping the front or rear speakers either?
Not sure if the audi concert system has any eq'ing of the bass to protect the factory speakers, I do know that this is common on vw's with the rcd/rns headunits so that may affect howmclean your bass signal is. If it is you should be able to use something like a vcds to recode but it's not something I've looked into previously....