Regards from Romania,
I've just bought a BMW 525 - 2005 model and I have found out that I am not pleased with the "standard german sound" - 6 speakers. I asked some BMW dealers about some options to improve the sound quality but all said that is very complicated and very expensive. Well, I couldn't believe and I have started to do it on my own.
. I opened the car speaker locations, I replaced them with better ones and I added an 4 chanels amplifier. After all this work I have realised that it sounds worse than before (no bass and no clear sound). I don't want to give up! I think that the problem was that I have taken signal for the amplifier from the front doors wires and I guess that the sound is hi-pass filtered by the bmw cd head unit. Does anybody know how to solve the problem?
Thank you guys and hope to give me some feedback!