How to Make a Contact Microphone : 4 Steps - Instructables
Building (or Buying) Contact Mics – Zach Poff
building contact microphones - john grzinich
LOM knowledge base: research:contact_mics
LOM knowledge base: research:contact_mics
Designing and building an active contact microphone for field recording and sound design — Ezra Gray Audio - Sound Engineer & Sound Artist in Dorset, UK
building contact microphones - john grzinich
Cortado" Balanced Piezo Contact Mic kit now available from Zeppelin Design Labs | diyAudio
Make this DIY Contact MIC Circuit - Homemade Circuit Projects