I tried recording my band the other night. I have Logic Express 8 and a Presonus FP10. I used two overheads for the drums (ch 1-2), a mic for both guitar amps(ch 3-4), DI for bass (ch 5) and three vocal mics(ch 6-8). I wanted to use the line outs from the vocal channels and send them to our PA so we could hear ourselves. So I used balanced cables, plugged them into line outs 6-8 and plugged the other end into individual channels on the PA. This did not work. Did I do something wrong or are these line outs not intended to do that? I'm not talking about the send and return line outs on channels 1 and 2. I appreciate any help.