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Audio transformer repair/rewinding?

Discussion in 'Tube Audio' started by SaturationPt, Oct 12, 2018.

  1. SaturationPt

    SaturationPt Fickle Collector Subscriber

    Messages:
    1,473
    Who is recommended for repairing or rebuilding audio transformers (Hafler design in particular)?
     

     

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  2. crispycircuit

    crispycircuit AK Subscriber Subscriber

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    What is the exact transformer? To help better answer the question.....
     
  3. SaturationPt

    SaturationPt Fickle Collector Subscriber

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    1,473
    It is the LF transformer in an Acoustat MK-121-C Hafler Red Medallion. Interleaved windings, nomex, not sure if it can be repaired or needs rewinding.
     
  4. primosounds

    primosounds Powered with pure tube sounds. Subscriber

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    Heyboer does some of that. For a complete job of removing the old wire and rewiring its about twice the cost of just buyiing a new one.
     
    KentTeffeteller likes this.
  5. SaturationPt

    SaturationPt Fickle Collector Subscriber

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    There are no new ones AFAIK, unless David Hafler has one in his basement.
     
    Retrovert likes this.
  6. cademan

    cademan Addicted Member

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    9,047
    You can still buy new output transformers, just not specific to that amp unless Hafler does have one in his basement. :D

    Hammond and Edcore are a couple places to get transformers but these are basically general replacements and kit & hobbyists transformers.
     

     

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  7. Pio1980

    Pio1980 AK Member Subscriber

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    This looks like a very specific item for a specific application, not a catalog listing.
     
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  8. SaturationPt

    SaturationPt Fickle Collector Subscriber

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    It is designed and manufactured for this application, and just the -C Red Medallion version, not an off-the-shelf. This is why I'm looking just for a re-wind specialist.

    Unless someone can get in touch with David for me, ... I'm looking for an audio transformer specialist please.
     
  9. Brice

    Brice AK Subscriber Subscriber

    Messages:
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    Location:
    Hoboken NJ
    I am using TRS and Heyboer. Both are top notch rewinding company.
    Gary at TRS just rewinds transformer, Heyboer does that and makes new one also.
    I've been always satisfied by both.
     
  10. KentTeffeteller

    KentTeffeteller Gimpus Stereophilus!

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    Heyboer is a reliable shop to get a rewind done. And he works on difficult audio transformers, and the rare and beloved.
     
  11. primosounds

    primosounds Powered with pure tube sounds. Subscriber

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    I meant a new off the shelf similar type of output transformer from them.
     

     

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  12. triode17

    triode17 Super Member

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    Hey fellas', David Hafler passed away a few years ago. Try Heyboer.
     
  13. Dave451

    Dave451 AK Subscriber Subscriber

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    Hey folks, how does one get in touch with Heyboer? Their website doesn't show any contact information, as I recall. I was investigating getting an OPT rewound for a Bell amp and tried email, but no one every got back in touch with me.
    Thanks
    Dave
     
  14. Brice

    Brice AK Subscriber Subscriber

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  15. Dave451

    Dave451 AK Subscriber Subscriber

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    Thanks, Brice!
     

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