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bmw 550i

  1. BMW F10 550i Audio Overhaul Project

    System Design: Help Me Choose Equipment For My Car
    Hi, I have a 2016 550i with the Harman Kardon (TopHiFi) 688 system. It’s not doing it for me, and I want to build a proper system for the car. The car has too many speakers, and I want to simplify and run an active setup with front tweeters, front mids, underseat woofers, and a single subwoofer...