• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

OPT for 1.5 ohm driver

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#21
Thanks
My oh my that is a old transducer.
Found similar field coil designs at a flee market in my grandfathers small farming town town in about 1964.
Got them for 25 cents each. They were 1930s design.
As I was a young kid and wanted only rock and roll I tossed them after a short time. Not enough bass. LOL
 
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