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  1. Technical & Advanced Car Audio Discussion
    What is the technical side of ground loop / alt whine noise? It seems interesting to me that a ground loop in the electrical system can lead to noise through the amp and speakers. Since you have a very large cap bank in the power supply of your amp, shouldn't that be filtered out and never make...
  2. General Car Audio Discussion
    Hey all, I’m trying to eliminate a whine in 98 subaru. Increases and decreases with rpm and only goes away if the rcas are pulled from back of head unit. We have re-grounded the electrical system using the FSM to find all the points. Ran dedicated + & - from battery to amp and head unit (...
  3. General Car Audio Discussion
    The Fading Alt whine...yup "fading": is not a typo, plz help. Just finished updating an install on a 2003 SAAB95 Turbo. After starting the engine, I ran into the worst alt whine i've ever heard; but get this it stops after 15 minutes. Turn the car off and start it back up again and no alt...
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