From BROADCAST ENGINEERING Mag, circa 1964, plans by one Robert Tiffany on the design and construction of a low-cost ‘standby’ broadcast console. Output amp stage uses my fav line output transformer, the UTC A-25: still unequaled among air-gapped plate:line transformers for low-frequency response. BTW, add a 600:60K mic input transformer to the front of this thing and you’ve got a pretty nice mic preamp with a LOT of gain.
DOWNLOAD: Console_0001 