Question, Replaced Concert Head with Sony MP80
 

I replaced the head unit today and after getting it back found that the front speakers were sounding great, but the rear had very little power running through them. The place that installed it said that there was a amp running the back speakers, first is this true and second where is it? And lastly how do I fix this problem, replace the speakers and run a new amp for the rear or can I do it without having to do that? Thanks for all your help.


1998 A4 Concert Stereo replaced with a Sony MP80.

If you have a non-Bose system, they're right on the money. Just
 

run speaker wire from the new head unit to the speakers and you'll be set. In the TT, they're 4-Ohm which is fine.

do what he said below