Electronics > Beginners
Tracking back 100Hz hum in a tube guitar amp
Andreax1985:
Now that I solved the 100hz hum problem... just for the sake of curiosity... I'm wondering: how much white noise is to be considered normal? When volume and gain controls are set to zero the amp is dead silent. But if I go past 12 o' clock with both, white noise level gets considerable (as is for every other amp same model as mine I have tried, so it's not a "problem" of my amp but, rather, a design issue).
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