[Ron Ramirez]

Eliot (John) - Thanks very much for the link! Very good info. Unfortunately, this circuit is designed for 100 mA max B+ current. With 21 tubes, I suspect the MP VI will be running more like 150-200 mA. I'll email Leigh and ask his opinion. He is doing a great work with his Atwater Kent info and schematics website.

http://www.atwaterkent.info/

Arran - That is a neat Magnavox speaker! Too bad it's a 15 and not an 18, though. Yes, it's expensive, but if that were a 1930s Jensen instead of a 1930s Magnavox, it would have been gone within minutes of its posting at that price.