Recently fully serviced, sounds great, this amp rips on guitar and harp! Unknown ceramic green back speaker
Made by Valco Manufacturing Co.; Chicago
Also these were made under the Oahu name, same amp
Original or old stock black bottom tubes! 2 X 6V6 power tubes 6SL7 preamp 5Y3 rectifier preamp tube in muffler canister: 6TN9-A.
Tech notes for service:
Installed and rewired new filter capacitors Installed three coupling capacitors in preamp Installed grid biasing resistors in power amp Rewired AC power cord Resoldered all cold joints.
PARTS USED 3 22uF @500V........................................................................................................ 8.00 24.00 1 .1 @400V Mylar film capacitor............................................................................. 1 .02 @400V Polyester film capacitor..................................................................... 1 .01 @400V Polystyrene molded capacitor........................................................... 2 2.2MΩ @.5 metal film resistor 1% tol...................................................................
