Hey guys, I bought a pretty well-kept, well-preserved Audi A4 B5 Avant with the 1.9 liter diesel engine with 116 hp. I decided to upgrade it a little bit with noble details. I’m talking about retrofitting a GRA system, beautiful rims and a very good car hifi system. I want to do the latter first. Now to my question: Unfortunately, I know 0 about the topic of car hifi. I only know, I like bass and loud music and I don’t want any Subwoofer who takes my place in the trunk. At the front I have space for 13 speakers and at the back of the doors 16cm speakers. In addition, I have in the trunk on the side a CD changer and a small subwoofer built by Audi. But there must definitely be more. I have already picked out on the internet a speaker for the front 2 doors. That would be either a Von Helix or JBO. In the back I don’t know what to take there or also which radio for such a In addition, I would like to have a subwoofer where the spare wheel is now. Does someone have experience Bzw. can recommend something to me? I would like to leave it all.. Thank you in advance for your suggestions…