funky mic°!
whats that output transformer?
capsule looks like plastic ck12.
for a well documented tube mic with the ef86 see the g7 www.gyraf.dk
gus,
i did some prelimary tests with a sdc today, trying to hear differences regarding g3 to plate or cathode. a little more gain was the first thing i recogniced while connecting g3 to ground. trying the same experiment with another brand ef83(valvo) i had the opposite result: little more gain with g3 to plate. next i started replacing the mkt plate to transformer cap. the 1µ wima sounded good to me, but only with g3 to cathode. i´ll go on fiddling around, so much fun to see that in such a simple circuit every small part does some difference...