Well.. I've worked on 1492 different 147 and 122's in my life, but I never
noticed It!!
100% cathode feedback. It that the offical name for it?

Thanks!



"Phil Allison" wrote in message
...



Has anyone ever seen this topology covered in any text?



** What: Ultralinear with 100% Cathode Feedback ?


I would like to learn more about how to use it.
What are the benefits, and what's required of the transformer??
I like the idea having the transformer in a feedback loop with the 6550.
Any comments? anyone used it before?

view schematic he

http://www.nashaudio.com/Public/6550_OUT.pdf


** See:

http://www.kbapps.com/audio/schemati...7poweramp.html


Leslie amps used the same basic idea decades ago.




........... Phil