Hi all, Setting the scene... So tonight I'm doing a show in a small classroom type auditorium, single tiered that holds about 500, there is no built in stage so we will be bringing in our own risers, the stage will be about 12' deep and 16 feet wide. We are planning on using two Meyer MTS4-A's for the FOH sound, one on each corner of the stage. For monitors we will be using a pair of 12" powered ev's. The perfomer is a solo artist who plays acoustic guitar sitting down, he uses alot of open tunnings and does alot of finger tapping and guitar box slapping as well. He will have a DI and I thought about throwing a pair of SM81's in stereo. Which brings me to my question, what stereo pattern should I use? I've gotten some really great results using XY patter about a foot off the 12th fret in a recording studio setting. I don't have as much experience with using the 81's in a spaced pair and worry about phase issues. And also I've never done stereo micing of an acoustic guitar for a live performance. I think the performer sits fairly still during the performance but definetly gets dynamic with his hands so I won't want the mics to be too intrusive, also keeping in mind he will probally have a vocal mic for stage banter. Of course I should also mention that I may not necessarily be using the SM 81's source for the main or monitor mix, although I will check it out and see if it sounds good blended in with the DI. We will also be doing a recording of the show in multitrack in which having several options on the table will be greatly appreciated. So with all that in mind, my big question is how I should mic the acoutic guitar? With an available pair of 81's how would you set them up? Any advice would be greatly appreciated, Thanks!