Hello Colin,

COLIN LAMB wrote:
Hello Frank:

The push-pull output transformers should be fairly common and easy to
obtain. Antique Electronic Supply, in USA, is a good source. As I recall,
the output tubes are 6V6s, so that would use a common transformer as
well as driver transformer.

actually the output tubes and the driver are all 6F6. Also the output
audio impedance of the SP-200 series is 600 ohms, I wouldn't mind too
much to have directly an output impedance for driving a 4-8 ohm
speaker, but my first option would be restoring the set as much as
possible close to the original. I'd be happy to find any information
about the transformers, like power, turn ratios and so on.

Best 73 es HNY

Frank IZ8DWF