2006 Core Duo MacBook Audio Distortion/Corruption, Internal speakers only

Discussion in 'MacBook' started by pzr, Feb 17, 2011.

  1. pzr macrumors newbie

    Jan 28, 2011
    Hi there.

    This issue only just started last night, and since then I've tried using Onyx to repair permissions, clear all the system cache, reset the PRAM/NVRAM and SMC, switching to Soundflower in Sound preferences and back to Internal Audio (That sometimes cures audio glitches for me)

    But none of this has fixed it, and it's consistent from the left to right speaker, and the 'subwoofer', which makes me think it's not a hardware failure, at least not the speakers anyway.

    It's also not just distortion, it seems to have trouble accurately reproducing sound, as when listening to some songs to investigate the issue, it's throwing out sounds that I've never heard on these tracks.

    What makes it stranger still is that it's only on the internal speakers, I could understand if anything on the 3.5mm jack was affected as well and put it down to a chipset failure or something, but it's absolutely fine outputting to the 3.5mm jack, unless there are independent controllers for the internal speakers and the 3.5mm jack?

    Any input on what to try to fix it would be appreciated, as I've done all I can think of, seeing as it doesn't appear to be a failure of the speakers themselves.

    Thanks a lot :)
  2. pzr thread starter macrumors newbie

    Jan 28, 2011
  3. pzr thread starter macrumors newbie

    Jan 28, 2011
  4. pzr thread starter macrumors newbie

    Jan 28, 2011
    I'm going to have to start replacing parts soon if no one has an idea of what it could be :p
  5. See Eagle macrumors newbie

    Mar 30, 2011
    Have similar problem with Core Duo MacBook and ATV2. I suspected a heavy processing load was degrading signal quality, but quitting all other apps on the MacBook does not help. Turning down the volume control on iTunes reduces, but does not eliminate, the distortion.
    However, there is NO distortion when playing music from the iPod app on either of two iPhones through ATV2, so the problem seems more likely to be related to iTunes or the MacBook, rather than the ATV.

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