Limberpine Posted December 2, 2020 Author Share Posted December 2, 2020 4 hours ago, MechEngVic said: Try bypassing the 3rd prong (ground) of the amp's cord with a cheater plug, see if that makes the hum go away. The ground loop may be between the amp and your A/C power. So I did ground the RCA to itself and hum in both speakers. I also took the RCAs off altogether, just speaker wire to amp and there is still a hum. Quote Link to comment Share on other sites More sharing options...
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