Microphone Volume - High and Low Impedance

Microphone Volume - High and Low Impedance

Date Updated: August 22, 2017 FAQ #392
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.