amplifier "power bandwidth"

Discussion in 'Archived Threads 2001-2004' started by John Doran, Feb 18, 2002.

  1. John Doran

    John Doran Screenwriter

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    i have seen the specification "power bandwidth" for amplifiers,and do not know :

    1) what it measures, and

    2) how important a measurement it is.

    could someone help me? thanks.
     
  2. ColinM

    ColinM Cinematographer

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    In a nutshell, it measures the amp's performance in relation to the Hz - What it can produce and how it performs while doing it.

    150w from 20Hz to 20kHz with .03% distortion would be a typical good spec, whereas...

    150w @ 1kHz, .7%THD indicates that the maker only tested the amp at one easy frequency vs. the whole spectrum.

    I personally consider it important to keep THD as low as possible, since it accumulates in the signal from the source to your ears. Subwoofers (I believe) are not as sensitive to distortion, it is not as audible, my opinion.

    I think this answers your question....

    - CM
     
  3. John Doran

    John Doran Screenwriter

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    thanks for the reply, colin.
    i'm actually not sure if it answers my question.
    i have heard the term used separately from references to distortion ratings over a particular bandwidth.
    bryston amps, for instance, have it as a distinct entry on their lists of specifications. (for example, see here)
    and, in a review of the aragon 8008bb, john e. johnson of Secrets of HiFi, stated that
     
  4. ColinM

    ColinM Cinematographer

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    The more I read, the more I learn.

    Good replies!
     
  5. John Doran

    John Doran Screenwriter

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