Question about Audio Players & Recorders
There are a few things that can cause this but two in particular are the most common. One is a ground loop. If you have multiple pcs of equipment hooked up a ground loop can be created. Ground loops are basically different grounds that are not held at the same potential. The second could be a power supply filter cap is going bad or possibly not in the circuit. Capacitors filter out the 60Hz noise after the AC is rectified. Any 60 hz getting into your amp will cause it to hum.
Posted on Feb 11, 2010
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Posted on Jan 02, 2017
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