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Old 23rd September 2011, 10:22 AM   #21
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Location: Alps:Tube amp designs over 150W, SMPS guru.
Those output trannies have arrived for that monster project. One on the bench for a suss out. Of course, a British wound custom Williamson 18 sect design. with a specialised primary...got my work cut out now.

Worth mentioning; time is gradually slipping. Output transformers of this complexity, it's all down to the skill of the person on the coil winding machine; with complex interwinding connections and counter directions, no automation can do this and people with such handed-down-generation skills are now heading for retirement. The question whether a 14 sectioned would be a slight tradeoff than an 18 sect..we'll see.
Total amp weight with reinforced chassis around 55-60 kgs.

richy
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Old 24th September 2011, 08:50 AM   #22
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Quote:
Originally Posted by richwalters View Post
Worth mentioning; time is gradually slipping. Output transformers of this complexity, it's all down to the skill of the person on the coil winding machine; with complex interwinding connections and counter directions, no automation can do this and people with such handed-down-generation skills are now heading for retirement.
And we can only hope that people like that don't take their skills to the grave. It is hugely important to pass knowledge like this on, especially for the next generation of valve enthusiasts.

When the older generation pass on, we are at risk of not keeping this knowledge alive. This is why this site is so important.
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Old 9th April 2013, 09:56 AM   #23
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Default Favourite Tubes/Valves Threads ...

Gee, it seems a shame that this thread has been postless since 2011. Let's see if we rectify (sorry) that oversight right now as the Tubes/Valves forum is (IMO) home to some classic DIY threads. By "classic DIY threads", I mean that these threads show DiyAudio members united in pursuit of a better solution to the task at hand. These threads often illuminate the finer, nobler, more collaborative side of DiyAudio members. So, here, are some of my favourite DiyAudio Tubes/Valves threads ...
#26 pre amp
6v6 line preamp
One more 4P1L SE
4P1L DHT Line Stage
This list would also include "EL84 Amp - Baby Huey" had it not been mentioned in a previous post in this thread. It should also be noted that I have not read every thread in this forum, so there are likely other "gem" threads out there waiting to be discovered. -Edward
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