Vintage crystal microphone system.

This is a working system I took out of a accordion as a part of a upgrade. This system works best with a smaller accordion.

The mic should be mounted inside the accordion on top of one of the keyboard reed blocks facing away from the reeds.

 System is complete but i would add a 1K resistor on the final output for a better sound.

These sound best with a bass amp , a guitar amp will sound really raw.