Hi jlee, welcome to tube insanity! It's OK, you have friends here.
My guess is to connect speaker positives to 1 and 2, while negatives both connect to C (common)
I recommend you find someone familar with tube amplifiers who can check it over for you. A few things need to be done before you can use it to maximum enjoyment and safety.
Test all the tubes, replace signal tubes if too worn out, and replace output tubes with a good matched set if necessary. There is only one bias adjust, so matching is important for a nice sound on a push pull tube amp.
Test transformers for shorts and appropriate output for the tubes.
Check/replace that big 50 year old electrolytic power supply cap It is only 40uF so a bigger better one might make it a lot quieter, maybe even better bass too.
Adjust the bias of the tubes after you test/replace any duds
Check offset voltage on the output. 0V is ideal, less than 50mV is probably good enough. 100mV is pushing it. Fixing that might not be worth it. But at least you know what you got, take the repairman's advice.
Estimate output impedance so you know what speakers will work best, probably highest impedance that you can find - 16 or 8ohms minimum.
Measure power output so you know how to best use it.
PM if you need someone to check it over, I can recommend a great tech, reasonable and loves this kind of 'modest' restoration. Tube amps are alive, and need savin no matter how meager.
Rich
