So last weekend I was taping an outdoor show (Guster at Plymouth State's Spring Fling). I set my stand up right at the board, mounted the mics and started to hoist them as high as they would go (about 10 feet), aiming at the speaker stacks, which were suspended from the ends of beams that criss-crossed the stage and stuck out over the front corners.
The band's sound engineer wanders over to me and suggests lowering the stand to about 7 feet, telling me that the sound would be better lower down because the line array they were using was more coherent at head level or just above. The show was somewhat sparsely attended, so I wasn't really in danger of having people sitting right below my rig, shouting into it, so I gave it a shot. To my surprise, the tape came out sounding really good - the bass was much fuller than other tapes I've made of them, and it did sound coherent, for lack of a better way of explaining it. It's not like he was telling me to lower my stand because I was blocking anyone; there was nobody behind me to block. He's gotten to know me over the last month and I think he was just passing along some good advice based on what he knew of his setup.
So my question is this - what's a good rule of thumb to be aiming at, height-wise? Obviously the crowd will be a factor, but in general, if you've got a vertical stack system with the highs coming out of the top and the lows coming out of the bottom (which is what I was led to believe in terms of how this one worked), do you want to aim in the middle? Slightly lower than the middle?
Also, if you're under some sort of an overhang, like I was at WSP in Boston, do you want to run exactly halfway between the tops of people's heads and the overhang, or is slightly higher or lower better? Thanks for any feedback...having fun playing with my new toys.
--Dave