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320d se

  1. Add Subwoofer to E90

    In Car Entertainment and Electronics
    320d se 2008 pre facelift Got stock prof radio [2door, 2 under seat, 2back speakers all wired direct to head unit - no amp]. Thinking about how to add subwoofer [any recommendations????], one with built in amp in the boot. Connect to battery is no problem. To get audio do I.. a...connect to...