ratickle

I just bought a brand new Promedia 2.1. As soon as I plugged it into the power, I could hear the hum coming from the subwoofer. There was no audio source plugged in and the satellite speakers were not plugged in. Just the subwoofer connected to power. After connecting the satellite speakers, I tried turning the volume up or down and that had no effect on the subwoofer hum. After all the great reviews, I was very disappointed. I boxed everything back up and returned it.