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rear speaker

  1. Can a Rear speaker be added to stock unit?

    smart General Discussion
    Hi all, I have an 08 Cabrio passion. I wanted to add a speaker in the back but keep the stock radio 10. I have read that the stock radio only has 2 outputs for speakers. It looks like I dont have tweeters, but I do see some wiring under my drivers seat that looks like Smart sub?? I cant hear...