Have a series 1 berlina added amps,subs,speakers etc.My question is when you use the front or rear aux of the stero the sound will only come from the 4 speakers mainly back (fader settings and all other settings set to standard) and sounds like crap and does not seem to be outputed through the the amps and sub.

But when you listen to the radio and play cd`s use bluetooth phone it sounds normal,meaning that it comes though the amps sub and from the rear speakers only as it have set it up that way and the sound difference is massive and sounds as it should.

Why does it does this,is there a different speaker wiring system for the front and rear aux,some speacial setting or something holden have done to be difficult.

Im sure that this has been asked before but cant find the answer,hopefully some here can help