09-19-2021, 08:44 PM
In the case of the Philco 90s, I'm pretty sure the cores of the P-P and the SE transformers are the same.
Bob, the 70/90 speakers used an improved spider and would sound much better than the 20 speaker you have.
Steve
Bob, the 70/90 speakers used an improved spider and would sound much better than the 20 speaker you have.
Steve
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