Quote:
Originally Posted by maxhifi
I would not build it as it is designed, unless you really want to hear what a public address system sounded like in the early 1930s.
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LOL! Agree.
If anyone wanted to build a tube amp, there are a lot of recent designs out on the web, plus you can't go wrong with copying any Williamson design or a Fisher, Scott, Marantz etc.
Also, RCA tube manuals (available in repro and used on ebay) have all sorts of tube projects in the back, and every edition always had one or more hi-fi amps. Any of those would work fine.
The magic is in the output transformers though. You have to source either top notch vintage iron or spend the money and get real good current production.
If I wanted to build a tube amp, I would look for a *true* basket case (rusted outside in a dump, etc.) Fisher or Scott 7591 amp and grab those output transformers and go from there.
John
EDIT: you don't need to buy a copy of the RCA manual. Here is a link to download it for free!
https://archive.org/details/RCA_RC-30_1975
Here's two, a 15W and a 50W amp
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