The Secret Society of Lathe Trolls

Thanks, Mark - that makes sense. The period mic that came with it doesn't have any switch, but I don't think it's original - doesn't look like the one on the manual cover. All the Amphenol cables I've seen are actually only 1-conductor + shield so I wonder if it was ever used. I'm now thinking I'll ...

I have recently acquired a Meissner 9 home suitcase cutter that I'm recapping, and I'd like to update the mic inputs to work with modern low impedance mics. The first step is understanding what the current circuit is doing, and that leaves me puzzled. The original has 3-pin connectors with a pin lay...