I bought my A3 with a concert stereo fitted, but it was a faulty unit with the volume control problem. I have since had it replaced and it is sorted but I've noticed my front speakers have been left scarred by the trauma of being kept on full blast. Anyway I've been told that these can be replaced with aftermarket ones without having to replace anything else. I just want to know which speakers to go for? Any help would be appreciated. Also a second point, I've just bought some poorboy's wheel sealant for my 18" R8 Reps and Meguairs car clay kit. Any good? Feedback appreciated. Cheers.