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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. Technical & Advanced Car Audio Discussion
    Hi, This is going to be a long first post. I have a 2004 Honda Accord. I originally had my sound system installed at an installer near my house. the system was -Alpine SPS-600C -Alpine SPR 6x9 -JL Cleansweep -Sound Ordnance M-4075 -JL 12W3v2 -JX500/1 This system had a little bit of...
  4. Technical & Advanced Car Audio Discussion
    When i installed my second hifonics amp, i started picking up the alternator whine and some buzzing through the speakers. I bought a stinger ground loop isolator and plugged it in between my daisy chained amps, and the whine did not change. So, i grounded the tiny little red wires that were...
  5. Technical & Advanced Car Audio Discussion
    Ok, I think I tried everything, but hopefully someone can help me out. I have a buzzing sound coming from my speakers(tweeters and mids) when the engine is on. There is no buzzing sound when the music is playing or paused when the engine is off. Here is what I'm running: -Kenwood X994 -Crescendo...
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