Noob here, is the search function always down? Anyway, I have a Klipsch KSW12 II sub and I'm getting a very noticable hum from it. The hum is quieter when the receiver is turned off, but still there. I have tried using both the speaker wire inputs as well as the RCA inputs and get the same hum. When the sub is on and there are no inputs connected, there is no hum. I have had the same sub/receiver in the past 5 places I've lived. Home, college, townhome and two homes of my own in the past two years. The sub was fine at my parents home, at college, and in the townhome, I did have to use a two prong power cord adaptor. The hum has been present in my first house and in the one I just moved in to. Do you have any suggestions?