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Rod Elliott -Low Noise Balanced Microphone Preamp

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Este vorba de schema de aici: http://sound.westhost.com/project66.htm


Impedanta de intrare se modifica functie de gain? Am oarece probleme cand castigul este reglat la minimum, se pare ca impedanta de intrare scade atata de mult incat afecteaza generatorul de semnal.


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