09-04-2015, 03:15 PM
Yes, it seems like an interstage transformer. The connection to the speaker is a bit strange, unless it is the common B+ supply to both the 226 audio stage and the 71A output.
What does pin 2 of the 71A connect to? The other terminal of the speaker seems like it should connect there somehow.
What does pin 2 of the 71A connect to? The other terminal of the speaker seems like it should connect there somehow.