[R-390] 600 to 8 ohm speaker converter

[Joe O'Brien]

A while back there was a long thread on transformers for the 600 ohm local audio output.  I guess it must be 25 years or more I got one I think based on this list, a RADALAB, INC. transformer, but with no discernable part number on it.  I used a Realistic 8 ohm speaker which I think always had great audio.  I had the R-390A Local Audio 6 connected to the transformer Primary 1, and Local Audio 7 to Primary 2.  I forget now which of the Secondary 1 and 2 outputs from the transformer went to the speaker's black -, and to the speaker's red +.  Any help on which is best?  Or just trial and error?  I'm usually more on the error side of things LOL!  Thanks!
Lengthy stretches being out of the country and a home move ten years ago kept a lot of my stuff packed away for so long, and I have yet to even finish unpacking, plus have seemed to have forgotten a lot of things.  And I may even have a Hammond 119DA around someplace, but just where I don't know.
73/Good weekend,Joe/Former KG4DVB