I have a friend that has a 2002 a6 4.2 and he is looking to put a small sub in it. From what we have found online they did come with a stock subwoofer, but when we looked for it all we found was a big plastic box on the right side of the trunk with 2 small speakers in it that said Bose. Is the subwoofer inside here or is it somewhere else? Also if he did put an aftermarket sub in could the stock amp be used? (if there is one)
If anyone has done this and could help me out that would be great!!