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Old 21st March 2013, 10:35 PM   #1
CV6045 is offline CV6045  United Kingdom
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Default PP Output Transformers

I am looking for someone to make for me a Pair of PP Output Transformers. Size and Price are not an issue....I just want the best I can lay my hands on. I have considered SOWTER but they really dont want to make anything outside the norm, as I am looking to have them made with C Core and Silver wire on the secondary. If you guys can give me any suggestion as to where I should start to look I would appreciate it.
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Old 21st March 2013, 11:25 PM   #2
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I have a contact in Parkstone, Dorset. He can manufacture transformers to any specification and quality.
I had a1957 Ampeg in with a transformer issue. No problem, he made a new transformer to fit and that was 5years ago. Still going strong.
Majestic Transformers Co., Rossmore Road, Parkstone, Poole, Dorset. BH12 2HQ
email david@transformers.uk.com
Hope that helps.
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Old 21st March 2013, 11:32 PM   #3
CV6045 is offline CV6045  United Kingdom
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Hello and thank you for your reply. I am aware of Majestic Transformers...they made some Mains Transformers for me about 5 years ago and also a Pair of Output Transformers for 211's in push pull. They only lasted about 10 minutes before Flashing Over and going up in smoke. I used to use Bob Sugden (Lancroft Audio Australia) to make my Transformers, but he shut up shop about 5 years ago and retired....that was a real shame as he really new his stuff when it came to making Transformers.
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Old 22nd March 2013, 03:26 AM   #4
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Please forget the silver wire, it is complete waste of money, now days copper grades are just as good a electrical conductor good as silver is (highly purified copper does even exceed silver and has been around since the end of the last century). Silver has only advantages when it comes to heat conduction or if the surface is unprotected (a corroded silver surface is still a good conductor whereas copper is not!).
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Old 22nd March 2013, 09:02 AM   #5
CV6045 is offline CV6045  United Kingdom
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Default Output TraNSFORMERS

Many thanks for the reply....I tend to agree with you that Silver wire is probably a waste of money...that said I am prepared to give it at least a try. I have had a quote from "Transtronic" here in the UK to make a pair of O/P Tx for me using Silver Wire on the Secondary (cost 1,000 Euros each). I could always go to Audio Note but they talk in telephone numbers and want about 10,000 euros for one. If anyone has used Transtronic before then I would be interested to hear what they think of them.
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Old 22nd March 2013, 09:57 AM   #6
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Quote:
Originally Posted by CV6045 View Post
Many thanks for the reply....I tend to agree with you that Silver wire is probably a waste of money...that said I am prepared to give it at least a try. I have had a quote from "Transtronic" here in the UK to make a pair of O/P Tx for me using Silver Wire on the Secondary (cost 1,000 Euros each). I could always go to Audio Note but they talk in telephone numbers and want about 10,000 euros for one. If anyone has used Transtronic before then I would be interested to hear what they think of them.
Audionote is expensive for....what?
There T300 improved HiB cost 644 and for super HiB 854. Ultra HiB 1162.
Just changing the loops will almost double the price. A normal big FeSi C-core cost maybe 20-30 euro and the best HiB (ultra HiB?) maybe 5-10 more.

Dos anybody know what the difference is between HiB and HiB from AN?

Last edited by esltransformer; 22nd March 2013 at 09:59 AM.
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Old 22nd March 2013, 10:06 AM   #7
JLH is offline JLH  United States
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I'm in agreement that silver wire is probably not the best way to spend your money, but it does have one important advantage. Silver wire's magnetic field induction conversion factor is better than copper. It does convert flux into current more readily than copper. In theory, this should translate into being able to resolve the small nuances in the music better. This information is straight from Jack at Electro-Print.

The big question is can you hear the difference? In a comparison of 45 tube amps, I was not able to correctly pick out the OPT with silver secondary windings. I thought I heard a difference, but wasn't sure. So for me, I could not tell a difference.
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Ah, how beautifully the orchestra sounds before a rain! In a dry sunny day there is no way for the instruments to sound this way!
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Old 22nd March 2013, 11:35 AM   #8
DF96 is offline DF96  England
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Quote:
Originally Posted by JLH
Silver wire's magnetic field induction conversion factor is better than copper. It does convert flux into current more readily than copper.
I would love to see which bit of Maxwell's equations predicts that!
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Old 22nd March 2013, 11:38 AM   #9
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I think that a copper/silver alloy wire would be interesting to experiment with.

as for silver, I made crossover inductors before that performed very nice. I would imagine that an SE transformer would be very large in size, but the trade off of insertion loss vs saturation would have to be considered. A toroid design would have less insertion loss. I wonder if plytron ever experimented with silver and silver alloy wire in their toroid designs.
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Old 22nd March 2013, 11:43 AM   #10
CV6045 is offline CV6045  United Kingdom
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Default PP output Transformers

Gentlemen there does seem to be a difference of opinion on Copper versus Silver . I guess the only way is to have a blind listening test. I do suspect that unless you have ears like a German Shepherd that it would be hard to really tell the difference
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