Contact Mics
Brass/Ceramic elements are available in various diameters 10-50mm, maybe others.
Datasheets for the 12mm ones I bought:
Diagram for simple wiring (open to noise/interference)
Diagram for balanced wiring
Revision #1
Created 2026-08-04 13:38:28 EDT by micro
Updated 2026-08-04 13:38:51 EDT by micro