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Anyone making custom transformers anymore?

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  • Anyone making custom transformers anymore?

    I’ve contacted Merren and Heyboer with no response. Any suggestions?
    If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

  • #2
    By phone or email?
    nosaj
    soldering stuff that's broken, breaking stuff that works, Yeah!

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    • #3
      Edcor has like a thousand designs, with a bit of lead time they're quite capable and not terribly expensive.

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      • #4
        Originally posted by nosaj View Post
        By phone or email?
        nosaj
        Merren by both. Heyboer by email.

        I’ve looked through Edcors catalog. Nothing I can reasonably use.

        I found something from the UK. But the eBay listing is $115 shipping plus the $90+ for the transformer.
        i contacted the manufacturer directly, so Il see what they say.

        i need a 6k6 p-p to 8 ohm 10W or under

        If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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        • #5
          6k6 push pull is something like 12kohm? Some guys on an antique radio forum suggested this one. http://www.hammondmfg.com/125a.htm

          Choose your impedances, choose your power.

          I found Heyboer very helpful when I've called them on the phone.
          Last edited by glebert; 06-06-2022, 04:26 AM.

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          • #6

            I’ve looked through Edcors catalog. Nothing I can reasonably use.
            How come?
            You nominally need 12kPP 10W, these are 10k-15k (pick one) , REAL close both,10W

            https://edcorusa.com/collections/tub...ut-transformer

            https://edcorusa.com/collections/tub...ut-transformer

            Ready made or a standard product if custom wound.

            Good price.

            And way better than any "universal" one.
            Juan Manuel Fahey

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            • #7
              Originally posted by J M Fahey View Post


              How come?
              You nominally need 12kPP 10W, these are 10k-15k (pick one) , REAL close both,10W

              https://edcorusa.com/collections/tub...ut-transformer

              https://edcorusa.com/collections/tub...ut-transformer

              Ready made or a standard product if custom wound.

              Good price.

              And way better than any "universal" one.
              Huh?? Where did you guys come up with 12k? I want a a 6k6 (plate to plate) primary impedance, because that's what the design calls for. I'm using a pair of 5902 Beam Pentodes
              I mentioned 10W and under because a 10W OT is as big as I would reasonably use for this project, which is about 3W max as it stands. I would much rather use one that's around 4-5W.
              Edcor's smallest OT with the load I want is 25W I think. Way overkill.

              Fahey, what would it take for you to put your transformer winding shoes back on and build me a nice quality OT for this project?

              *for reference, see: https://music-electronics-forum.com/...-would-you-use
              If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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              • #8
                Originally posted by SoulFetish View Post

                i need a 6k6 p-p to 8 ohm 10W or under
                6k6 impedance or 6K6 tube?

                Edit: Missed post above.
                - Own Opinions Only -

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                • #9
                  Ohhh. I see where we wrong here. I forgot there was a 6K6 tube and didn’t specifically mention primary impedance when i said 6k6 p-p to 8 ohm
                  If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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                  • #10
                    But, it was a lowercase “k” on purpose.
                    Haha! I was like “ …the balls on these 2 jokers. just doubled the impedance I wanted and decided that’s what we’re going with now”
                    Last edited by SoulFetish; 06-06-2022, 02:34 PM.
                    If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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                    • #11
                      Oddly enough, the post I deleted above was assuming you wanted 6.6k ohm primary, but seemed like an easier answer. Why not just use a Blues Jr. style OT? Is "10W or under" something magical?

                      https://www.hammfg.com/part/1750F under $50

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                      • #12
                        Yup
                        If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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                        • #13
                          Well, in that case I think mercury mag has the exclusive on the magic stuff.
                          Originally posted by Enzo
                          I have a sign in my shop that says, "Never think up reasons not to check something."


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