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Old 18th September 2012, 05:24 PM   #51
palmas is online now palmas  Portugal
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Originally Posted by andyjevans View Post
Thanks for the ETF shootout info. Clearly the AN Trans-300 is better than the Trans-152 which is pretty average really and didn't do too well in the Silk shootout. Lundahls don't seem to be at the top of the tree - there's a lot of windings in most of them. I was disappointed with the LL1620.

Andy
I found a pair of LL1620/90 in an old amp I made some 10y ago.
Before I reuse it for a GU50 PSE, can you tell me why were you disapointed with it? Thanks
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Old 18th September 2012, 06:50 PM   #52
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Hi

Actually, hearing all my transformers now with a much better amp topology, I would revise my opinions.

Trans-152 (90mA) is about equivalent to the LL1620/80mA. The AN is a fraction more dynamic with slightly better soundstage and bass, while I think the Lundahl is a little better on vocals.

I imagine you'd put both in the "better" category, without being in the "best" category of Tango etc. I'm not disappointed - I'm getting very good sounds. Also I think the "amount of wire" was a bit simplistic - as far as I can tell the LL1620 sounds better than the LL1682 which is smaller with fixed secondaries, though I haven't tried out both with exactly the same topology yet.

So get that LL1620 up and running - should sound good!

Last edited by andyjevans; 18th September 2012 at 06:55 PM.
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Old 19th September 2012, 02:48 PM   #53
palmas is online now palmas  Portugal
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Quote:
Originally Posted by andyjevans View Post
Hi

Actually, hearing all my transformers now with a much better amp topology, I would revise my opinions.

Trans-152 (90mA) is about equivalent to the LL1620/80mA. The AN is a fraction more dynamic with slightly better soundstage and bass, while I think the Lundahl is a little better on vocals.

I imagine you'd put both in the "better" category, without being in the "best" category of Tango etc. I'm not disappointed - I'm getting very good sounds. Also I think the "amount of wire" was a bit simplistic - as far as I can tell the LL1620 sounds better than the LL1682 which is smaller with fixed secondaries, though I haven't tried out both with exactly the same topology yet.

So get that LL1620 up and running - should sound good!

I hope, yes, since I used this Lundahl, I just used big AN transformers, like the double C TR310 and other that really work well with big DHT's.
Now I'll be using this LL1620/90 for a small leaving room system (my wife keeps complainning I only have good sound where she does't go).
I can have about 480V for the PSE GU50, and as that is not enough to make it work in pentode mode, I thing I'll risc triode and see how it goes.
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Old 19th September 2012, 03:21 PM   #54
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When I earlier said that Daburu was better than my AN OPTs - that was with something called AN trans-150...

Best Regards.

I have a strong feeling that AN double c-core OPTs are good. Too expensive though.
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Old 19th September 2012, 04:15 PM   #55
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When I earlier said that Daburu was better than my AN OPTs - that was with something called AN trans-150...>>

That's probably the Trans-152 that I have. It's pretty good but not great. So that looks good for the Daburu. But the Softone is interesting too!

Daburu is a lot cheaper at HiFi DIY Site - VT4C/211 Power Triode

Where did you get yours?
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Old 19th September 2012, 05:27 PM   #56
Bigun is offline Bigun  Canada
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My russian friend says that Sowter is very well regarded back home. I don't see them mentioned much this side of the pond - shipping costs appear to be prohibitive.
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Old 19th September 2012, 05:46 PM   #57
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Good Russian Taste.

My 3,5K Sowter SA08s serve excellently well for my 300B-SE. Whatever changes I make to my system, can always be heard through these trafos, and I have no plans to change them. The overall sound of the amp is very natural, and the stereo image is huge.

My recommendation: choose the best trafo you can get to listen to. Sell other stuff and buy the best, rather than be put off by high price: trafos just get better with age, and last a lifetime - provided the quality was high in the first place. Low cost OT is a very false economy, that prevents you finding out what is possible with DIY.
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Old 20th September 2012, 11:20 AM   #58
palmas is online now palmas  Portugal
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Quote:
Originally Posted by Rod Coleman View Post
Good Russian Taste.

My 3,5K Sowter SA08s serve excellently well for my 300B-SE. Whatever changes I make to my system, can always be heard through these trafos, and I have no plans to change them. The overall sound of the amp is very natural, and the stereo image is huge.

My recommendation: choose the best trafo you can get to listen to. Sell other stuff and buy the best, rather than be put off by high price: trafos just get better with age, and last a lifetime - provided the quality was high in the first place. Low cost OT is a very false economy, that prevents you finding out what is possible with DIY.
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Old 21st September 2012, 02:58 AM   #59
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Quote:
Originally Posted by Rod Coleman View Post
Good Russian Taste.


My recommendation: choose the best trafo you can get to listen to. Sell other stuff and buy the best, rather than be put off by high price: trafos just get better with age, and last a lifetime - provided the quality was high in the first place. Low cost OT is a very false economy, that prevents you finding out what is possible with DIY.
+1, from my humble experience. I really like Transcendars (both 10W and 20W) and yet as soon as I could afford them I bought the transformers pictured here (2A3 next to them for size comparison). Outputs are almost 11lbs a piece...
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Old 21st September 2012, 06:31 AM   #60
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Could you give us an idea of the sound quality of the James OPT compared with the Transcendar please?

And anything else you tried?

Andy
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