Thanks, Bob. Eliminating the center back speakers has eliminated the problem, and I will look into your suggestions as far as those 2 channels go. The sound I was getting was eerily similar to the problem I had with the previous firmware. The only other thing I would mention now, is the problem appeared with 5.1 discs, with everything set for 7.1 and the rear channels on.
Addition: I'm ordering new shielded cables, hoping this will eliminate the problem.
Last edited by greylight44; 07-28-2014 at 08:53 AM.