Sure 520SL Microphone Resistor

Discussion in 'Microphones, Speakers & Audio Processing' started by K9BDR, Feb 3, 2020.

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  1. K9BDR

    K9BDR Ham Member QRZ Page

    I have two Sure 520SL mics that have a 39K Ohm resistor connected across the cartridge. I cannot find a schematic that shows this resistor, however I have seen pictures on the internet showing some 520SL Mics with the resistors installed and some without. Do I need this resistor and what is it's purpose?
  2. K7JBL

    K7JBL XML Subscriber QRZ Page

    I believe the resister was put there (by Shure) to roll off some high frequencies. You should be able to take it off without doing any harm.

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