Sorry if this has been covered before but I couldn't find a thread with this same situation.
Last week I played my KPA at practice directly into the PA going stereo from the main outputs. I don't really need that - I don't use any true stereo effects right now. This week I wanted to see if I could just get by with just one XLR going from the Left Main Output to a single channel on the mixing board. I set my output to Master Mono - however it only came out of the left speaker. Maybe I'm misunderstanding the situation, but I feel like it should be able to be panned L/R or put center on the one channel. What am I doing wrong?