Hopefully you've gotten this answer already, but this might help someone else, too. The amplifier is behind the rear passenger trunk panel. You have to pull out the middle plastic piece that goes over the trunk latch, put the trunk luggage spacer up, and pull the panel out. There is a 12v outlet, domelight wire, and pop fastener, then just pull hard to get the 2 clips. I have a symphony 2 BOSE, and there is no subwoofer, but I think they are in the same place if equipped.
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Hi I ave the same problem I donĀ“t know where is the amp and subwoofer in my a4 cabrio, help !!!
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