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Toroidy transformers

Hello all,
long time reader and first time poster here.



I have a question about Toroidy output transformers (sklep.toroidy.pl) - anybody have tried it for SE application, especially for 2a3, 300B, etc. DHT?


I tried TTG-6C33CSE OPT in my cathode follower 6C33C amp, and it working well (8Hz-35/40kHz -3dB).
What about other products from them?


Thank you for any information and maybe measurements results.
 
Toroidy are mentioned in this thread starting part way through.

SE Output xfmrs....who are the current suppliers for not many $$$

Stve


Thank you for this thread, for some reason I didn't see it...




Toroidal transformers are not suitable for single ended, as they will become saturated because of DC flux in the core.


Toroidal transformers can be made with gapped core, and so be used in SE amps... Without core gap - you're right, of course.


Actually, I listen SE amp with toroidal OPT now.
 
Uh, ungapped toroidal transformers, yes. Toroidy manufactures gapped SE specific toroids.

The current transformers made from Toroidy for SE applications are indistinguishable from the "Hi-end" Audio line from hammond, (TTG-EL34 vs a 1629SEA) both in UL, triode and pentode configuration using the taps according to a ~3.5K and ~7k (yes I used first the common nominal connection and then switched the output tap to reflect ~7k primary, then the same for the hammond but to reflect ~3.5k), Well thats also my kind oppinion using 4p1L, 6v6, Gu50, 6p3s-ev, they both are almost as good.🤤🤤
 
Toroidy manufactures gapped SE specific toroids.

Sorry, I didn't know that there is available gaped toroid cores. certainly in my abominable country, neither a common core is available. I made my own toroids winding them at hand, but unwinding commercial units.
 

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The current transformers made from Toroidy for SE applications are indistinguishable from the "Hi-end" Audio line from hammond, (TTG-EL34 vs a 1629SEA) both in UL, triode and pentode configuration using the taps according to a ~3.5K and ~7k (yes I used first the common nominal connection and then switched the output tap to reflect ~7k primary, then the same for the hammond but to reflect ~3.5k), Well thats also my kind oppinion using 4p1L, 6v6, Gu50, 6p3s-ev, they both are almost as good.🤤🤤

I use cheap toroids as outputs in push pull amps with fantastically good results. I'd love to see the nicer units from a place like Toroidy- I hear very good things about them. I think toroidal is a very good way to go.
 
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I use cheap toroids as outputs in push pull amps with fantastically good results. I'd love to see the nicer units from a place like Toroidy- I hear very good things about them. I think toroidal is a very good way to go.

The real issue for me is if for the money they perform as well as the interweaved dual xfmr setup I'm using... Two coils are certainly larger, and have more capacitance, but the lower DCR of my set up makes it perform better in a sim and by my experience. BTW if you haven't tried the interleaved method originally suggested to me by @MaxHifi, you need to. When I built a 6P1P PP amp with VPT12-2080, I got 2.5W of 20Hz out of it. Switching to the dual set up I can expect the full 10W (triode connection, 300V, 56mA because j'men câlice).