I am trying to figure out the possible source for a problem I have been having with my EP500. As of late the sub has been making a low random thumping noise, almost like a heart beat I guess you could say.
This is happening when the sub is on, but receiving not signal. I check my connnections and they appear to be good. Even with the line in unplugged and just the sub plugged into the wall I still get the random noise. Since you guys are the experts, this was the first place I thought to go. Anything thought would be greatly apreciated.
