Used my 11R last night at a gig, around 700 people which was good. I did notice something a little worrying though, some of my rigs sounded quite harsh and 1 of my solo rigs sounded over processed and really tonal (not in a good way). Any of you guys got any suggestions?

My set up is, 11R connected to PA desk using the 2 XLR main outputs, no amp or cabs on stage. Hope you can help....