Thanks Nels and Ligi for the response. My audio room is located where my home theatre used to be. The only remnants of the home theatre are the double coax cables that were attached to my DSS/Tivo receiver. While the cables are no longer attached to the satellite dish, they are still grounded. These coax cables are lying within 5 feet of my amp. I will move these right away and see if that helps any.
Jim
Jim