I should have been more clear I suppose. The switch activator is the
knurled knob around the output cable, it's geared to the switch located
inside, the low pass is mounted on the circuit board.

Another source of problems with these mics is the electrolytic in the dc
to dc converter drying up. It's in the shielded case down at the bottom
of the mic.



Eric K. Weber wrote:
Dan appears to have been correct about the switches just not their
location.... looks like they are inside the case....

Look here for the schematics.....

http://www.gyraf.dk/schematics/schematics.html

Regards:
Eric