I have Rokit 5's.  If you look at the picture I attached it shows how mine is layed out.  The reason I ask is because I just recently hooked these up and as soon as a make the connection to the monitors, I can hear a constant hum.  I made sure the volume on them and my computer wasn't set at max (which could produce that hum).  I'm just wondering if I am missing the obvious or if I need a better sound card ( I have the one that came witht the computer).