Hi everyone, I'm working on a performance art piece which is to take place outdoors, in a field, so there's no reflection to work with. The audience will be composed of roughly 30 people, seated. I need to know what size/power PA I'm gonna need. I need to be able to achieve a decent sound level, not rock-concert levels, but not too far off. It needs to be able to cover the voice of some talking loudly 4-5 meters in front of the audience. I was thinking of using two 3-speaker systems (2 speakers + 1 sub), putting one in front, and one behind the audience. I thought this would give me good all-round balance (phasing is not an issue given the nature of the music involved), but I have no idea what power would be needed in the sort of context... Can anyone help me out with this? Thanks!