[Texasrocker]

I agree Doug. These old trf sets do sound much better by adding a matching trans to use a modern pm type spkr. I use the 8" full range muzak type spkrs in my personal vintage collection of RCA 100A/or early AK type metal spkr housings. Those muzak type 8" spkrs retrofit nicely using a custom-cut wood baffle board, and no appearance change to orig spkr housing at all. The muzak type pm ( overhead ceiling) spkrs can be found for cheap or free anywhere a old office or retail business ceiling is being demolished for remodels with multi-tap spkr transformers attached!I once found 12 of each ( good as new for free) at a old "EyeMasters" Store being remodeled. Those old grid-type drop-in ceiling tiles do hold some good treasures that demo remodel contractors know nothing about!Most of the time, all those good spkr items go into a construction dumpster!
As for my "customers" orig RCA 100A, it worked great so I left it orig. I was surprised it sounded good also after all those yrs!