I'll search, but I've recently got a little trouble with mine.
Essentially they're making some weird buzz / hum noise when they're sitting idle which can be heard from 1ft away..
They didn't do this before - but just have begun to do this.
I've posted up on other forums, and I've changed every cable - position and power supply that i can.
Just wondered if I've suddenly begun to notice, or if they've developed a fault.