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Class D audio amplifier recommendation

Discussion in 'Electronic Design' started by Mook Johnson, Oct 5, 2004.

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  1. Mook Johnson

    Mook Johnson Guest

    I think Cladd D audio might be a neat thing to play with. I've heard that
    the sound quality can suffer if the component selection is not done
    correctly.

    Any recommended components that have proven themselves with sound quality.
    This will be a bout a 15-25 watt power supply from batteries so it needs to
    be efficient.
     
  2. Ross Herbert

    Ross Herbert Guest

    |I think Cladd D audio might be a neat thing to play with. I've heard that
    |the sound quality can suffer if the component selection is not done
    |correctly.
    |
    |Any recommended components that have proven themselves with sound quality.
    |This will be a bout a 15-25 watt power supply from batteries so it needs to
    |be efficient.
    |
    There are a number of IC's around for Class D amps (Maxim, National
    Semi, Zetex, NJR etc) but you would have to do all the work necessary
    to get it into a working design. If you wanted to start with a proven
    design you might consider the ZAPpulse from LC Audio
    http://www.lcaudio.dk/com/zp2.htm although this sounds a bit of an
    overkill for your requirements.
     
  3. analog

    analog Guest

    Check out http://www.diyaudio.com/ and follow this set of links:
    diyAudio Forums > Top > Amplifiers > Digital Amplification, or just
    go here http://www.diyaudio.com/forums/forumdisplay.php?s=&forumid=49

    Do it yourself techniques and advice for building class d amplifiers
    are discussed as well as most commercially available class d amps
    and kits.
     
  4. Ross Herbert

    Ross Herbert Guest

    On Tue, 05 Oct 2004 03:22:41 GMT, Ross Herbert

    |On Tue, 05 Oct 2004 02:20:18 GMT, "Mook Johnson" <>
    |wrote:
    |
    ||I think Cladd D audio might be a neat thing to play with. I've heard that
    ||the sound quality can suffer if the component selection is not done
    ||correctly.
    ||
    ||Any recommended components that have proven themselves with sound quality.
    ||This will be a bout a 15-25 watt power supply from batteries so it needs to
    ||be efficient.
    ||
    |There are a number of IC's around for Class D amps (Maxim, National
    |Semi, Zetex, NJR etc) but you would have to do all the work necessary
    |to get it into a working design. If you wanted to start with a proven
    |design you might consider the ZAPpulse from LC Audio
    |http://www.lcaudio.dk/com/zp2.htm although this sounds a bit of an
    |overkill for your requirements.


    You might also take a look at the IR website for Class D design info
    http://www.irf.com/product-info/audio/classddesign.html
     
  5. Ross Herbert wrote...
    It's surprising to see a list of class-D amplifier IC manufacturers
    without the 800-pound gorilla of class-D IC technology, namely TI.
     
  6. dd

    dd Guest

    Used a Maxim part DC coupled as a servo driver with complete success.
    TI also have an "alternative" approach which reduces the fundimental
    carrier component and increases higher frequency components to ease the
    LPF design to the point where they claim that the LS inductance does the
    job, any comments?
     
  7. Pooh Bear

    Pooh Bear Guest

    The performance of Class D can be truly dreadful if not carefully implemented.
    See www.tripath.com

    TI also do some lowish power Class D stuff.


    Graham
     
  8. Joerg

    Joerg Guest

    Hi DD,
    If there were cables going to the speaker I would feel quite uneasy
    about that.

    Regards, Joerg
     
  9. Ross Herbert

    Ross Herbert Guest

    On 5 Oct 2004 05:55:31 -0700, Winfield Hill

    |Ross Herbert wrote...
    |>
    |> Ross Herbert wrote:
    |>
    |>| Mook Johnson wrote:
    |>|
    |>|| I think Cladd D audio might be a neat thing to play with. I've heard
    |>|| that the sound quality can suffer if the component selection is not
    |>|| done correctly.
    |>||
    |>|| Any recommended components that have proven themselves with sound
    |>|| quality. This will be a bout a 15-25 watt power supply from batteries
    |>|| so it needs to be efficient.
    |>|
    |>| There are a number of IC's around for Class D amps (Maxim, National
    |>| Semi, Zetex, NJR etc) but you would have to do all the work necessary
    |>| to get it into a working design. ...
    |> You might also take a look at the IR website for Class D design info
    |> http://www.irf.com/product-info/audio/classddesign.html
    |
    | It's surprising to see a list of class-D amplifier IC manufacturers
    | without the 800-pound gorilla of class-D IC technology, namely TI.


    TI = etc
     
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