Should the capsule be isolated?
« on: July 12, 2020, 06:02:56 AM »
I'm in the process of designing a chassis, capsule holder etc for a microphone. The microphone is based on a circuit i found on this side will building some diy power supply. The circuit's schematic is posted in a thread called Official C12 Clone - Build and Support Thread. I have a question regarding the capsule. Should it be isolated or connected to the chassis ground?

Im told my circuits are ground breaking...


Khron

Re: Should the capsule be isolated?
« Reply #1 on: July 12, 2020, 06:13:10 AM »
Most likely isolated - depending on the design, the backplate might have some bias voltage applied to it, or it may even be used as the signal source, connected directly to the JFET gate / tube grid.
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

Gus

Re: Should the capsule be isolated?
« Reply #2 on: July 12, 2020, 09:14:13 AM »
IIRC Rossi or maybe someone else had a good thread about a conductive mount issue


 

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