Dynamic Mic

A dynamic mic is one in which audio signal is generated by the motion of a conductor within a magnetic field. In most dynamic mics, a very thin, light diaphragm moves in response to sound pressure. The diaphragm’s motion causes a voice coil that is suspended in a magnetic field to move, generating a small electric current. Generally less expensive than condenser mics, dynamics feature robust construction, can often handle very high SPLs (sound pressure levels), and do not require an external power source to operate. Because of the mechanical nature of their operation, dynamic mics are generally less sensitive to transients than other microphone types, and may not reproduce quite the high-frequency “detail” some other types of mics can produce. Dynamic mics are common in live sound applications on vocals and instruments. In the studio, dynamics are often used to record electric guitar, brass, and drums.