What is this?

Discussion in 'AV Receivers & Amplifiers' started by Clarkey, Apr 5, 2002.

  1. Clarkey

    Clarkey
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    right. ill tell you the story first
    (im playing this thru headphones so as not to cause structural damage! ;))
    I play a constant 60hz tone. Its great, but as soon as i pass the 7 mark on the amp i start getting wierd noises (hard to describe)
    Then I play a 600hz tone. It great up until 8 on the amp when it goes wierd.

    Am I hearing clipping here? If so is it the amp or headphones at fault?

    Thanks
     
  2. mjn

    mjn
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    if you turn up the amp over number 7, then all you are adding is distortion....

    As the RMS of 1 is 0.707, anything over this figure is distortion, and anything below it will have a high noise floor. So what you are hearing, is more than likely clipping.
     
  3. Clarkey

    Clarkey
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    as I thought. But howcome the higher the frequency the higher the volume can go before it starts this clipping?? :confused:
     
  4. mjn

    mjn
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    not sure on that one, as the volume will be the same on both frequencies, and if clipping occurs, it is on the amplifier and not the speakers, but perhaps its your ears playing tricks on you...?

    Or mayve your amp hasn't got a flat response across the frequency range?
     
  5. Clarkey

    Clarkey
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    well its the same amp as yours so you tell me :)
     
  6. Reiner

    Reiner
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    Higher frequencies present a lower load, hence clipping/distortion will set in later as compared to low frequencies.
     

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