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  1. Audi A6 C5 BOSE subwoofer no bass

    DIY Music Forum
    Hi guys! I know it was a long time ago. But i have a 1999 Audi A6 C5 2.4 Quattro sedan. I upgraded to the BOSE system. (All speakers, amp and subwoofer). The head unit: JVC KD-X50BT The wiring is made with my friend. RCA to amp from head unit amp (cut the RCA end and install it into the...