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Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


    MKiii Output Transformer

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    rudes

    Posts : 47
    Join date : 2012-03-07

    MKiii Output Transformer Empty MKiii Output Transformer

    Post by rudes on Sat Sep 19, 2020 4:25 pm

    Has anyone ever seen a MKiii output transformer with six wires on the secondary side? Instead of just the usual yellow, brown, orange, black...It also has a gray and cloth covered wire as well for a total of six wires. The only wires a get a meter reading on are the gray and black wires.MKiii Output Transformer Trans10
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    stewdan

    Posts : 211
    Join date : 2010-03-07
    Age : 82
    Location : Houston Texas

    MKiii Output Transformer Empty Re: MKiii Output Transformer

    Post by stewdan on Sat Sep 19, 2020 6:48 pm

    rudes ---- Dynaco made a MkIII with Public Address outputs (70 volt, if I remember correctly) in addition to the normal 4 (Yellow/Brown/Orange/Black) wires. I don't remember what the extra wire colors were. Model was A-431-70.

    It shows up in the Dynaco Transformer Manual, in the table of transformers.

    See the following links:

    http://knob.planet.ee/kirjandus/books/Dynaco_Transformers.pdf <<=====

    or

    http://www.tubebooks.org/file_downloads/dynaco_transformers.pdf

    MechEngVic likes this post

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    rudes

    Posts : 47
    Join date : 2012-03-07

    MKiii Output Transformer Empty Re: MKiii Output Transformer

    Post by rudes on Sat Sep 19, 2020 9:24 pm

    The numbers on the transformer bell cover are 454353....Z353
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    stewdan

    Posts : 211
    Join date : 2010-03-07
    Age : 82
    Location : Houston Texas

    MKiii Output Transformer Empty Re: MKiii Output Transformer

    Post by stewdan on Sat Sep 19, 2020 10:16 pm

    rudes --- I don't know what that number is???? Look at the 1st Link in my reply, the one with <<==== (on the right)

    There is a Transformer Table in that link. That is where I got the A-431-70 from.

    Try googling your complete number 454353....Z353, and see what turns up. It might be some equivalent transformer's number??

    Stew


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    MKiii Output Transformer Empty Re: MKiii Output Transformer

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