Big trouble, I've just put together my new home theatre unit..... turn it on ...what the!!!!! radio noise coming through my speakers, disconnected dvd still noise , turned down Volume.. still the same. I'm only about 500 meters from Radio Australia and its massive aerial system . Question ....Do l needed to rip out all my speaker wiring and repace it with sheided cable or is there some type of filtering system that may help is problem.