Interstage Audio Transformer Recommendations

[MT70B]

Originally Posted by polyphase

I have successfully used an interstage transformer from Antique Electronic Supply, part P-T156, in 20s vintage radios. It should work fine with the 27-45 tube combo. It is quite small, so it could well fit into the original enclosure.
I have a couple extras, happy to send you one for a tryout.

Polyphase, Thanks for your input! I looked at the P-T156 on the Antique Electronic Supply web site but they did not show a spec sheet for that part like they do for some of the other transformers. By chance do you know what the primary and secondary resistance is for the P-T156. They do say the primary can handle 10 ma which is good. Looking at the RCA tube manual looks like the 27 tube in my radio who's plate current is supplied through the transformer draws up to 5.2 ma which is in range.

Thanks again for your input.

Mike