mic sticky? head amp calibration?

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shabtek

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I am looking for a proper procedure to check response of capsule impedance converter/head amp.
I know it comes up in many build threads.
    feed grid/gate but through what and from what? what is ideal termination etc.?


should there be or is there a thread to cover all these basics for mic building?
response testing, defluxing/conformal coating noise abatement, etc
 

abbey road d enfer

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shabtek said:
I am looking for a proper procedure to check response of capsule impedance converter/head amp.
The usual procedure is to inject signal via a capacitor of value similar to the used capsule.
However it's not always possible, e.g. where NFB is applied to the "passive" electrode, as in U67/87. Then the mfgr has implemented a way to inject signal.

should there be or is there a thread to cover all these basics for mic building?
response testing, defluxing/conformal coating noise abatement, etc
I think it could start as a thread in The Chamber...
 
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