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Volume pots reduce dynamic range by adding thermal noise while attenuating.

Potentiometers volume controls put resistance directly in the current path of the signal which has an associated thermal noise. The incoming signal already has a fixed SNR. By running it through that resistor you not only made the signal smaller but now mixed in the thermal noise content with the signal. Double whammy gotcha there.


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  • Volume pots reduce dynamic range by adding thermal noise while attenuating. - Ugly 09:30:42 07/01/25 (0)

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