Electrical Considerations and Electronic Interface


The Microphone Book by John Eargle



In this chapter we examine details of electronic performance of microphones and their interface with the following preamplifiers and consoles. Subjects to be covered include: remote powering, microphone output/preamp input circuitry, the stand-alone microphone preamp, microphone cable characteristics and interference, and overall system considerations. A final section deals with capacitor microphones operating on the radio frequency (RF) transmission principle.


Most modern capacitor microphones operate on 48V phantom powering (also known as simplex powering) provided by the preamplifier or console input module. The basic circuitry ...

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