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Author Topic: Dummy xlr microphone plug to use when measuring mic input performance  (Read 5,527 times)

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Offline n3mmr

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Dummy xlr microphone plug to use when measuring mic input performance
« on: April 20, 2016, 01:47:58 PM »
What would be the correct xlr-plug-with-passive-components to use as dummy input load when attempting to measure mic preamps performance?

It must be a good simulation of balanced source impedances as well as allow a realistic dc load for testing with phantom power switched on.
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Offline fguidry

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Re: Dummy xlr microphone plug to use when measuring mic input performance
« Reply #1 on: April 22, 2016, 03:42:28 AM »
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Offline n3mmr

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Re: Dummy xlr microphone plug to use when measuring mic input performance
« Reply #2 on: June 23, 2016, 01:42:34 PM »
Actually a correct simulation of a cm3/om1 is

22microfarad in series with 50 ohms between 2&3, and about 17.2k, but matched to 0.1%, from 2 & 3 respectively, to 1.
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