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Do It Yourself (DIY) paradise for tube and SET project builders.

RE: think this is true in any cathode biased amp

Uh huh. The bypass cap. combines with the cathode resistor to form a high pass pole. It is necessary to place F3 of said pole below 5 Hz., to avoid phase shifts within the audio band. Guess why I recommend 100 ohms and 470 muF. in combination bias situations. ;>)


Eli D.


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