hooked up my 3007 for the first time today. just to try it out, I hooked up my macbook via HDMI/mini display port adapter and mini-toslink. ran HDMI out to my plasma.
Overall very impressive out of the box, I certainly need to tweek it and set it up.
One thing I did notice, was when I selected the correct input, the reciever clicks and then there is a very slight hum from the sub. I tried removing the grounding screw on the sub which only made it louder. I tried Sub 1 and Sub 2 outputs, no change. I changed to a different output (with nothing connected) and no hum. Using a cheap monoprice 12' RCA cable.
Now, I can only hear it when I'm inches away from the sub, when I turn off the receiver no hum. Is this normal, do I need to try a "premium" sub cable? I don't think it would be interference from the audio input as it's optical. Both the receiver and sub were plugged into the same surge protector.
It doesn't bother me at listening distance, just wanted to be sure nothing is wrong with my setup. Axiom EP500 sub for whatever it's worth.