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    Dynaco Mk 3 454216 output transformers manufactured without ultralinear taps?

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    mattattnet


    Posts : 1
    Join date : 2019-12-24

    Dynaco Mk 3 454216 output transformers manufactured without ultralinear taps? Empty Dynaco Mk 3 454216 output transformers manufactured without ultralinear taps?

    Post by mattattnet Tue Dec 24, 2019 10:41 pm

    I am trying to rehab a pair of Mk 3 monoblocks for a friend and when I started working with them, noted that there are no ultralinear taps.

    At first I thought maybe they were just cut short within the end bells, but I do not think so.

    These are, according to the end bell stamping, 1974 vintage 454216 output transformers.

    I removed the end bells, but see no vestige of UL taps.

    I do not note any evidence of ultralinear taps under the paper and mylar tape, there appear to be only 3 taps on the primaries.

    Would these be originally manufactured this way or were they a special order item?

    I guess I will consider changing these to triode strapped 6550s, or I will need to rework the power supply a bit, as there was no dropping resistors to the screen connections, pin 4 on the output tube sockets.

    Any info would be appreciated,

    Regards,
    Matt

      Current date/time is Fri Mar 29, 2024 12:41 am