I recently purchased a new reciever (Sony STR-DE997) and since hooking everything up i am getting an intermittent noise coming from my powered sub.
It happens at random and i usually do not notice it while watching tv or movies but it also happens when the all my equipment is turned off and the sub is in standby mode? the sound is a loud groan like noise that lasts for approx 1-2 sec. This noise can be heard in other rooms so it is fairly loud.
I have tried moving the AC cord directly to the wall, i have put it in the power bar with all the other components, and i have tried plugging it into the back of the receiver. It is still happening?!?!?
Any suggestions would be greatly appreciated.
