Ok, I know almost nothing about PA's as I have always had a sound guy, but my new band does not. We hooked all of our equipment up yesterday and had a radio station (2 actually) coming through the PA. I found the problem today when I found that some of the cables had little or no ground. We were also having problems with monitor levels. Today, I unhooked everything except 1 mic and 1 speaker. I have an old Peavey XR-600B. Everything is fine with the main level. But when I plug into the monitor out, the level is extremely low even when it is cranked all the way up. We are not using 'real' monitors but instead using some small Peavey PA speakers. But I have this problem whether I plug in the small Peavey's or the big mains. Is there a difference between a speaker and a monitor? Does this mean I need to get an additional amp just to push the monitors? Please help!