Hey guys. I need some help with installing a music system in my golf 3. Although my front 2 way speakers were buzzing with 2 months ago. Now I have built in new Auna with 2x200W. I also have in the back on the shelf 2x200W. Since I have admittedly no idea of the product, I would like to ask myself what I have to pay attention to when buying an amplifier/power amplifier. if necessary I would like to install a subwoofer if I did this step. Which subwoofer I would choose, I can’t say at the moment, because as an apprentice I’m more of a permanent failure and first of all have to save.My questions would be: 1. – How much watts must a power amplifier have if I have already installed 800 watts in the car. 2. – Is it rather advisable to get the loudspeakers and the subwoofer everything from a company e.g. complete system of Auna or doesn’t matter? 3. – Do you know a well explained tutorial where the installation is described? r line not around the Krassen Bass or the “Wums”. It’s about a nice sound. At the moment my radio is clearly overwhelmed with the speakers. (Sounds stay out, bass is barely audible, strong cracking/smoking or other interference signals) PS: I had to jam a speaker at the back, so the sound is a little more powerful I already thank you and please for understanding. I really have no idea about electronics.