Are Marstran wound by Heyboer?

[slashsound]

Hi there, I was wondering if there is a difference between these two companies. Is it Heyboer that makes them for Marstran or does Marstran actually sit there and hand wind their own trannies? I know Metro Trannies are Heyboer with a twist, I was wondering of Marstran does that too. Thanks. What is better for a JTM 45 to get that nice woody tone? And does it matter what brand of Power trannie you get as long as it provides the correct voltage and lasts many years?

[joshwilson3]

Heyboer winds trannys for Marstran to their spec.

[paulster]

Heyboer winds transformers for lots of manufacturers to their own specs. It doesn't mean that they are the same but with a different badge. They are proprietary to those manufacturers so you can't, for instance, ask Heyboer to sell you a Metroamp tranny or to give you the specs.

George's are based on one particular spec and Brian's are based on another, which might be almost identical or might be different. The only people who'll know exactly are Heyboer.

Any other manufacturer may have given them their own specifications or transformers to tear down and reverse engineer.

[slashsound]

Heyboer winds transformers for lots of manufacturers to their own specs. It doesn't mean that they are the same but with a different badge. They are proprietary to those manufacturers so you can't, for instance, ask Heyboer to sell you a Metroamp tranny or to give you the specs.

George's are based on one particular spec and Brian's are based on another, which might be almost identical or might be different. The only people who'll know exactly are Heyboer.

Any other manufacturer may have given them their own specifications or transformers to tear down and reverse engineer.

So wait...in the Marstran site it says they are handwound, does that mean that Heyboer Trannies are handwound?

[novosibir]

So wait...in the Marstran site it says they are handwound, does that mean that Heyboer Trannies are handwound?

Ask Brian and get his definition of where ends handwound and where begins machine wound!
Nobody is rotating the bobbin by hand and hasn't done this in the past.

OTOH - do you think, that handwound implies some benefits as opposed to machine wound?
And if so - which benefits?

Larry

[slashsound]

OTOH - do you think, that handwound implies some benefits as opposed to machine wound?
And if so - which benefits?

Larry

Well, I once spoke to MJ , the lady at the Seymour Duncan custom shop who hand winds pickups. She said that with pickups handwinding sounds better because she can control the tension alot better than a machine can for certain parts of the scatter winding process or something like that. So I would assume the same holds true for output transformers to some degree.

[Brian Wallace]

All you have to do is email and ask.

My transformers are wound for me by Heyboer. As for hand wound, I'll assume you mean sitting in front of something like a drill or lathe and winding them straight from the spool to the coil. This was never done on transformers made by Drake back in the 60's. The winding machine being used by Heyboer is the same Drake used back in the 60's. They do single winds and what is called stick winding, multiple coils at once. This is a very hands on technique and isn't something you set up and walk away from. Wire tension is controlled throughout the entire process of the wind. They even have a sweet old lady that has worked there forever doing the winds.

My transformers are wound from wind cards I make for Heyboer. The specs for the transformers are gathered from rewinds I have done and from old burnt units I have bought and taken down over the years. I've spent a great deal of time and money on getting the information to have what I feel is the best transformers I can offer to the public at an affordable price. I hope my efforts have brought many happy hours of playing to the people that have bought them.

On a final note, to sit down and wind any number of transformers would consume a great deal of one's time and since I work a day job, build / repair amps, box up and sell transformers all on my own, I just don't see how one person could just wind transformers without it being a full time job on it's own. This was the need for an outside source to wind my transformers.

[Scumback Speakers]

Heyboer winds the OT's for my Southbay Ampworks amps as well. You come up with a spec/design/ohm impedance/etc and they build it for you to your spec. It's a proprietary thing, obviously.