Hey guys, I had to run a new HDMI cable for the new PJ. This took away a good amount of the hum. It is still too loud for me. I haven't had a chance to do anymore work on the system. I did run a ground from my grounding cable on my cold water pipe to the amp, the marantz with no change. Also ran a ground from both my monster power centers, no change.

What do you guys think of a ground loop eliminator like the ones they sell at Radio Shack? Just wondering?

Thanks again.