I've had this subwoofer for a few years and never been able to get it to work properly. It seems to be all connected correctly as per the instructions. When I use it, whether it's movies or music it does the same thing. After a couple of minutes or so it starts a low hum that progressively gets louder until it is unbearable. The volume settings seem to be all ok. I'm stuck and unsure what to do about it?
Help would certainly be appreciated..
