It certainly could be.
"It is run through a DirecTV DVD." This is unusual, can you detail the connections?
My surround sound speakers periodically make a horrible screeching noise. Is it my speakers or my receiver? Could it be how it is wired? The tuner is a Pioneer VSX-821 and the speakers are Harman-Kardin. It is run through a DirecTV DVD. I don't know how to fix it. Any suggestions would be greatly appreciated.

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