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Old 3rd September 2008, 08:57 PM   #1
pebo is offline pebo  Germany
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Default Looking for condenser microphone amplifier circuits


I have searched diyAudio and the web for circuits of condenser icrophone impedance converters/amplifiers. All I have found (beisde tube circuite) were quite simple circuits with one JFET and a few passive components. Is this the type of circuit used in the better/more expensive condenser microphones? Does anyone here have some information? I do not need a circuit diagram with component values necessarily, a diagram showing the basic idea will do.


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Old 3rd September 2008, 09:08 PM   #2
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Here is mine.
The capsule is from Marshall MXL-770 mic.
C3 should be 20 nF for proper equalization

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The Devil is not so terrible as his math model is!
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Old 3rd September 2008, 09:31 PM   #3
KSTR is offline KSTR  Germany
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look here for example:


- Klaus
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Old 4th September 2008, 12:00 AM   #4
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Try this link:


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