Dynamic Microphone
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Dynamic Microphones
Inexpensive but very Tough
Dynamic Microphones are classified as a pressure microphone, dynamic microphones works via electromagnetic induction. Dynamic microphones are relatively cheaper than condenser and ribbon microphones but are very tough. Dynamic microphones can handle abuse better than the other types of microphones. This rugged design coupled with high volume handling capabilities makes dynamic microphones the number 1 choice for live on stage performances from vocals to instrument micking.
The first practical dynamic microphone was made by the Western Electric Company in the early 1930s. Based on electromagnet principle, dynamic microphones consist of a diaphragm or thin membrane attached to a moving induction coil usually made of copper wire. This coil is positioned inside a permanent magnet.
When an incoming (1)sound wave hits the dynamic microphone's (2) diaphragm, the (3)induction coil then moves in symphony with the sound pressure in and out the magnetic field inside the (4)permanent magnet. The coil movement creates electrical current in the copper wire. The (5)electrical current or signal produced is then carried out by the internal wires connected to the terminals. From the terminal, the signal is then transported out via the microphone cable which will then be connected to a microphone preamp to be processed down the audio chain.
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