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Old 8th February 2006, 01:46 AM   #11
kevinkr is offline kevinkr  United States
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I just purchased a pair of these transcendar transformers on eBay, very reasonably priced, ($120) and tubelab indicated that they perform very well in a large number of amplifiers he built and sold using them.
I hesitate to spend astronomical amounts of money on output transformers for most of my projects, so these grooved well with me, more so on the positive comments of others who have used them. In the past I have frequently found and recycled vintage transformers often discovering in the process that they sometimes out perform many boutique brands..

I am thinking about a 2A3 amplifier I might build with them...
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Old 8th February 2006, 05:27 AM   #12
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Another cheapie OPT I considered that looks interesting is the James 6113HS from Euphonia Audio@ $145 pair.
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Old 20th July 2006, 10:17 PM   #13
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Nice. Just looking for a simple 300B. This looks like it. Can you post or direct me to the schematic? Thanks.
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Old 21st July 2006, 12:31 AM   #14
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Schematic.
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Old 21st July 2006, 02:13 PM   #15
kevinkr is offline kevinkr  United States
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I'll second 5U4's design post, I have designed and built something very similar and the basic topology is very good.

The transcendar output transformers I purchased are outstanding at the price, an absolute steal. Even at twice the price I would be able to recommend them as highly. I am sure there are better transformers out there, but these seem to offer most of the performance to be had regardless of price, and at an insanely low price.
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Old 21st July 2006, 02:31 PM   #16
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I've read this thread with interest, although not an SE fan myself. Just wondering, are there good Transcendar PP transformers to be had too?
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Old 21st July 2006, 06:08 PM   #17
kevinkr is offline kevinkr  United States
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Probably not, my understanding is that these SE transformers are leftovers from a run for an unnamed OEM that apparently went under prior to all scheduled deliveries being made and afaik once they're gone they're gone.
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Old 21st July 2006, 07:18 PM   #18
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Quote:
Probably not, my understanding is that these SE transformers are leftovers from a run for an unnamed OEM that apparently went under prior to all scheduled deliveries being made and afaik once they're gone they're gone.
That was the story that I got from Transcendar also. I was told to buy as many as I needed because there would be no more when they were gone. So I bought 20 of them. They are still for sale on Ebay. Maybe he had a lot of them. HOWEVER....

Transcendar is now selling push pull transformers on Ebay. I just looked and they have no items listed currently, but the last two sets of P-P transformers went for $90 per pair. I have not tried the P-P transformers, but the SE transformers work great. That is why I bought 20.
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Old 9th August 2006, 08:02 PM   #19
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Default Loftin White -wonderful circuits

I agree that Loftin White amplifiers have better microdinamics and greater realistic reproduction of voices and un-amplified instruments.
I have built the two annexed amplifier:
-set EC8010-VT52-Gz32 with Lundahl 1623 transformers (5k-8ohm). It use Audio Note copper coupling capacitor, but I have tried it also with russian teflon capacitor (more cold sound).
-Loftin White kind E83CC+VT52-hexfred rectifiers-Lundahl 3k-8ohm.
I admit that the Loftin White is a lot more realistic on chamber music-jazz-voices-classical and I like it very much.
I use them on Tannoy Edinburgh HE loudspeakers 94dBW with adeguately strong sound
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Old 9th August 2006, 08:02 PM   #20
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Default this is the Loftin White!

This is the second amplifier:
Loftin White amplifier from L'Audiophile Magazine by Jean Hiraga.
It is the better (even it has hexfred diodes and not the GZ32 as my other amplifier).
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