Question Sudden buzz from subwoofer

Jul 20, 2019
Hi all:

Not sure if if my sub is about to croak, but while playing music, it occasionally emits this harsh buzzzzzz for about a second or two. Other than this strange behavior, it sounds and works fine.

Connected directly to my receiver with a RCA monster cable.

Never had a problem with background hum or ground loop issues I’ve seen described on this forum.

Any ideas are appreciated!
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