Just bought a 52 reg A4 Cabriolet with the Symphony II head unit and standard speaker package. Compared to my previous car (an Omega with built-in Bose set up) the sound is pretty weedy. I can make an allowance for the soft top but would like to improve the sound. Bose say they don't recommend retro fits. Can anyone recommend a worthwhile upgrade? Thanks.
Re: Symphony II
How about a small amp, and a small sub built into one of the panels in the boot?
Or a stealthbox?