Hello, I want to put a little more pressure on my Golf 3, but I have no idea what I need and what I don’t. I still ask myself the following questions: – brand? – performance of the woofer? – performance of the amplifier? I really have no idea what is advisable. Besides, I got a Pioneer Radio (MVH-X560BT) and the Focal Expert 165 HP.(2 tweeters and the front speakers (I wanted to upgrade the 2 speakers at the back soon)) Just I find it personal My brother pointed out to me that there were 3 golfs that had a Nokia subwoofer original. It should be installed on the left in the small indentation in the trunk. I would build such a case myself, but what do you have to bear in mind? I want to have a good sound at the end, before everything starts clapping And my last question: My doors clapping quite nicely, if I do not have a good sound. give the speakers a little too much bass, and I already have anti-rumm mats inside. It helped a bit, but not much. First of all thanks for reading through, I hope someone can give me some advice.