Microphone Volume - High and Low Impedance

FAQ #392 Updated August 22, 2017

Question:

Why does my old PE515 microphone have so much more volume than the SM58 and Please explain the use for high or low impedance in microphones.

Answer:

The PE515 is likely wired as high impedance. The SM58 is low impedance. If you connect the SM58 to a Shure A85F low-to-high impedance transformer, it will be as loud, if not louder than the PE515. In general, a high impedance microphone will have an output level around 20 dB greater than a low impedance microphone.

To learn more about impedance, please go to: www.shure.com/faq
Enter the search keyword "impedance".
Have fun reading.

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Microphones

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A85F

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