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Pyle output transistors replacements

Discussion in 'Electronic Repair' started by Jimbo, Feb 9, 2005.

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  1. Jimbo

    Jimbo Guest

    Hi,
    I have a pyle car audio amp (sorry no model number here at work) that
    I need to order some output transistors. Numbers are 2SC4466 and
    2SA1693.

    Do I need to find a matched pair of these or is ok to just order some
    and replace them?

    Also any links where to purchase (in the USA) would be appreciated.

    TIA
     
  2. DaveM

    DaveM Guest

    http://mcm.newark.com has both transistors... the 2SC4466 @ $2.14, the
    2SA1693 @ $5.79. And they are in the good old USA!!!
    And if these are output transistors, yes, a matched pair would be desirable,
    but not mandatory to get the amp running, Not having a matched pair will
    result in some distortion, from unnoticable to very bad, depending on the
    level of mismatching. Very poor matching could result in the transistors
    destroying themselves after running for a while.

    --
    Dave M
    MasonDG44 at comcast dot net (Just subsitute the appropriate characters in
    the address)

    Never take a laxative and a sleeping pill at the same time!!
     
  3. Jimbo

    Jimbo Guest

    Thanks for the info... espicially regarding the mismatch. I also found
    some at mcmelectronics as well. Actually I think they are the same
    company ??

    Guess I will get some and find out about the match.

    Jim
     
  4. DaveM

    DaveM Guest

    Yes, same company. If you can spare the change, you might get several sets
    and select the pair that give you the most balanced voltage readings. If
    these are a complementary pair ( they likely are), select the set that gives
    you a voltage as close to 0V on the output as possible.

    --
    Dave M
    MasonDG44 at comcast dot net (Just subsitute the appropriate characters in
    the address)

    Never take a laxative and a sleeping pill at the same time!!
     
  5. James Sweet

    James Sweet Guest

    There's simple circuits on http://users.ece.gatech.edu/~mleach/lowtim/ that
    allow you to match transistors, just a couple resistors, a power source and
    a DMM are required.
     
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