Low level noise from spkr when nothing is playing


I need your help finding out why I am getting low level noise from my center speaker, even when nothing is playing. When I put my ear up to my center speaker I can hear low level noise. My system is made up of the following components: Sherborn 7/125A 7 channel power amplifier, Krell HTS 5.1 Control Amplifier, Faroudja DVD/CD DV-1000 player, Front Martin Logan Source Speakers, Center Krell Resolution 4 speaker. These are connected with MAC Silver PB Speaker Cables and Ultrasilver XLR cables. What can I do to test where the problem is coming from? I do not have a line conditioner. Will that fix the problem?
gdush

Showing 3 responses by gdush

All of the pieces are new to me. The center is not cranked up. It has been there since I have owned the pieces. I can only hear it when I put my ear up to the speaker.
It does not change my overall listening experience and I appreciate your input. As you all know, it is easy to be overly focused on every little thing. At the end of the day, I love the sound.
Grimace, I do not know what you mean by ground loop, lots of threads? How did you fix it in your system?