How much speaker hum is normal...if any?

[sheedoe]

Originally Posted by DeadDog

Yep, exact same thing I did to fix the ground problem. I first noticed it when there were faint vertical lines scrolling on the tv once I got the PS3. After figuring out it was the tv cable, I researched and found the same thing you used and it got rid of the issue.

When trying to see if something else was causing a ground issue I unplugged everything (all electronics, coaxial tv cable, anything I could think of). I then only had the receiver on and tried 2 different outlets, but it didn't make a difference.

I currently have a surge protector for everything, but no power conditioner.

Yea a power conditioner might help. Before I bought the ground loop isolator, I was able to eliminate the humming noise by plugging in my Amp through the power conditioner. Later I was informed that a running a power hungry amp through a conditioner is not recommended. So I ordered the isolator and now I'm able to plug my amp directly to the wall outlet.