[MRCA] VN-era speaker unit question

[Rob Flory]

Hi,
I am preparing a public demonstration of a TBX set where it would be
desirable to have audio that people standing around the set could hear.

Do I have it right that the iconic VN-era speaker, which has a switch on
the side for "Field or Pack Set Use" or "Vehicle Set Use" has an impedance
through a transformer of hundreds of ohms in one of those positions?

I don't know the nomenclature for the speaker, as the example I have
doesn't have a tag.  Can someone tell me the nomenclature?

Unfortunately I don't have the TBX set to just hook it up and try it.

Thanks, Rob
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