Symphony II

holden

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Dec 29, 2003
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Hi
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.
 
How about a small amp, and a small sub built into one of the panels in the boot?

Or a stealthbox?