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StinsonPilot

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I posted this a week ago and seems to have gotten lost in the forum change over. Don't know if it was ever answered.

I have my helmet set up working pretty good for the Skybolt with the exception of the mic.
I really like the David Clark M-1/DC powered mic. I think it's what I need to finish my system.

Problem is, my helmet comms doesn't provide the phantom voltage required to power it.

I know it's picked up from the low voltage of the speakers. I'm looking for a schematic for the capacitor etc that is needed to boost the voltage to what is needed by the mic (6-15 v or somewhere in there).

Thanks guys...
 

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