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Topic starter
September 3, 2025 12:48 am
Can anyone confirm that their FB21 causes your audio amplifier to hum very load? Makes no such noise when on grid power.
This is typically caused by a not so clean sine wave. Tomorrow I will capture an oscilloscope recording.
just curious if anyone else is experiencing this as well? Or maybe I have a unit that needs to be replaced?
thanks,
This topic was modified 2 days ago by mrwkbrdr
Topic starter
September 3, 2025 1:26 pm
Stumped on this one? FB21 sine wave is cleaner than my grid power, but my audio amplifier makes a loud buzz/hum noise when powered by Flexboss 21?
Anyone have any suggestions?
Prolly not a ground issue based on the sine wave.
