Axiom Home Page Forums General Discussion Advice from Axiom Owners ADA1250 feedback

When you said that you unplugged it, are you talking about removing the cable from your pre-amp to your ADA center channel?

I would as mojo said, try moving the center channel cable to either the left or right channel and see if the hum moves to that speaker. Likewise, try running the left or right channel cable to the center without the center cable plugged in. Does it make the hum. If it was a power problem inside the ADA then it would more likely be system wide and the hum would come from all your speakers.

You also didn't say if you are using RCA or XLR to connect between the pre-amp and your ADA. It should not make a difference, but if there is something up inside your pre-amp then this might help isolate the deficiency