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Old 5th August 2012, 08:47 AM   #1451
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Tony, you would need to discuss this with Jens and Andrew. I believe this discussion came about in the initial design of the 6 output boards. I became involved with this project as a means to acquire boards for my own builds.
I too have gotten into the tube amp area, though rather slowly, acquiring everything for a nice GU-50 amp. I have yet to get the pcb's layed out. The rest is pretty much done. I have hand wound the transformers and cut out most of the material for the chassis/case. Winding these transformers is a very tedious job. If you go to the christl ludwig site in Denmark or Germany you can see the base of my design. This guy is quite good. Just google 160 watt tube amp. Very nice. He has done all of his homework and much more.
Tad
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Old 5th August 2012, 09:14 AM   #1452
AJT is offline AJT  Philippines
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thanks Tad, i can find my way around Leach issues....
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Old 6th August 2012, 07:01 PM   #1453
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by tryonziess View Post
Tony, you would need to discuss this with Jens and Andrew.
D.Self, Blameless, Distortion Seven, NFB take off point.
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Old 6th August 2012, 10:43 PM   #1454
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Quote:
Originally Posted by Tony View Post
thanks Tad, i can find my way around Leach issues....
Hey Tony, I remember back then you mentioned you did some work on the double barrel. Did you have any luck on that?
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Old 18th August 2012, 03:20 PM   #1455
Junie is offline Junie  Philippines
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Quote:
Originally Posted by ipolyakov View Post
I have two boards for sale. if you are interested, please contact me at ipolykov at pacbell.net.

Thanks,
Igor
Hi Igor,

I got it, thanks a lot.
remarkable quality boards and professionally made.

BR,
Junie

Last edited by Junie; 18th August 2012 at 03:20 PM. Reason: typo error
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Old 19th August 2012, 12:41 AM   #1456
AJT is offline AJT  Philippines
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Originally Posted by soltari_knight View Post
Hey Tony, I remember back then you mentioned you did some work on the double barrel. Did you have any luck on that?
some guy in Manila was able to build 4 channels, unfortunately his hardrive crashed and lost all the files.....
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Old 19th August 2012, 05:21 AM   #1457
Junie is offline Junie  Philippines
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Default trimpot

Sir Tony good monirng!
Is it possible to use a 5K trimpot instaead of 4.7K?
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File Type: jpg Leach trimpot.jpg (24.0 KB, 193 views)
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Old 19th August 2012, 05:24 AM   #1458
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yes....
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Old 19th August 2012, 05:47 AM   #1459
Junie is offline Junie  Philippines
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Thanks.
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Old 19th August 2012, 09:42 AM   #1460
AndrewT is offline AndrewT  Scotland
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The tolerances on trimpots are often +-10% and +-20%.
Effectively 5k and 4k7 are the same thing.
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