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audio hiss

Discussion in 'Gen 3 Prius Audio and Electronics' started by charles floyd, Apr 14, 2017.

  1. charles floyd

    charles floyd Junior Member

    Joined:
    Nov 4, 2012
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    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    i replaced all my speakers with jbl gto's and added two 12 skar subs in the trunk and put a pioneer nex 4200 in the dash. now when i decelerate or push on the brakes i get a high (and i mean high and annoying) pitch noise coming through the speakers. i have tried wrapping the crossovers in foil. i have added sound matting under the amp. any ideas.
     
  2. Dyjital

    Dyjital Member

    Joined:
    Apr 5, 2017
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    Location:
    Oregon
    Vehicle:
    2023 Prius
    Model:
    XLE AWD-e
    You are on the right track but somewhere you have the emf still entering your audio wires. More than likely it's pre-amp.