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Old 3rd June 2004, 05:04 PM   #11
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I only tried EI 250VA transformers, and to me they sounded not as good as Plitron toroid. For some reason the air was missing (and I thought they woul dbe better). I didn't try C-core yet, but we might be getting some samples in a future.

Another interesting approach might be using 220V AC toroid with 110 V AC supply. This could produce some benefits. I alsi had some toroids from Definitive Technology with primary on the outside and they also sonded pretty good (and produced much less inrush current at turn on).
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 3rd June 2004, 09:12 PM   #12
jam is offline jam  United States
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Please let us know about your results about the C-core. Who is the manufacturer and is it made in the States or Canada. Plitron has a low noise transformer for audio applications but they want big bucks.


You are right about the medical transformers. Which brand have you tried?

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Old 3rd June 2004, 09:45 PM   #13
K-amps is offline K-amps  United States
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The Only C-Core trafo I have heard was in a Luxman M-02 power amp. (you know the light Champagne beauty with VU meters.)

The sound was as refined as I have ever heard. It did not have the midbass aplomb of a larger amp but had the definition and the air.

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Old 4th June 2004, 01:09 AM   #14
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Originally posted by jam
Plitron has a low noise transformer for audio applications but they want big bucks.
In their case, the price is well worth it.
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Old 4th June 2004, 01:17 AM   #15
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What about the R core from Technics? does anybody like the sound from them?
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Old 5th June 2004, 12:44 PM   #16
JanDH is offline JanDH  Netherlands
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Lightbulb O-Core


I read a lot on this subject and noticed in this regard the folowing site:

I managed to get some cores at :

Unfortunatly I was unable to get info on how to wind these cores to find out what is promissed on these sites. It lookes interesting to me.

Has any one tried these ???

Best regards,

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Old 5th June 2004, 01:22 PM   #17
Magura is offline Magura  Denmark
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You wind O core like torriodals...its just a more efficient (claimed more effecient, I dont know if thats true) way of making a torriodal trafo. So winding such should be no big deal if you got the required test equipment. Without the required test equipment its a no-go.

Everything is do the impossible just takes a little while longer.
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Old 5th June 2004, 08:49 PM   #18
B.L. is offline B.L.  Poland
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Where can I buy those transformers described by You?
Are they manufactured in Poland?

(Też mam na imię Bartek)
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