Crystal Microphone: Ceramic Microphone

Ceramic or crystal microphones are cheap and easy to manufacture and are capable of providing a high voltage output.

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Crystal microphones or ceramic microphones are generally low cost units offering a high output voltage into a high impedance.

The microphones tend to be at the bottom end of the market as they do not offer a particular wide frequency response and in view of the high impedance they are not widely used these days.

The main use of crystal microphone technology is within transducers used for a variety of monitoring applications and for automotive transmitters / sensors.

The terms crystal microphone and ceramic microphone are virtually interchangeable as they describe microphones using crystal or ceramic piezoelectric technology.