I have a question regarding an issue I have been having on and off. Sometimes when I turn on my receiver I will get a pop/snap sort of discharge out of my speakers. Most often but not always the centre - the sub will do it as well. I have on occasion unplugged everything from the outlets and replugged. Many times that seems to take care of things for a while. It does seem more frequent in the winter, a very dry time. I have replaced my power bar/ surge protector. I know we have serious power issues here. A lot of brown outs, surges and fairly frequent power outs. Not sure what to do and am wondering if these power conditioners I hear about might make a difference?