I'm going to be recording a children's choir doing overdubs for a song in a small church soon, and we won't be able to use headphones.
The pre recorded backing track is piano, acoustic guitar, and small string ensemble and there will be a couple dozen kids. Their footprint is about 15-18' wide.
I am planning on recording a pass of just the monitor signals playing in the room through the mics with the kids in place, and using that to reduce the bleed in post by reversing the polarity, assuming I keep the playback levels the same throughout all the takes, and the kids don't drastically change positions.
I'm currently spec-ing out what to rent for the gig, and debating whether a single monitor source would be ideal for simplifying the reflections for my cancellation plan, or if I should use a pair, for the sake of the kids and the conductor and the performance.
My current plan is LCR KM140s slightly elevated, up in front, close ish to the kids, and 414s in omni as a high wide spaced pair in the back of the church to capture the ambience of the church.
I would place the compact PA monitors, also elevated, behind the conductor.
Any one with experience with a setup like this care to weigh in?
As I said previously, headphones are already not an option. I will run the playback as quiet as I can get away with and still have them performing in time.
I have a mixture of confidence and mild anxiety at this point.
I did post on a previous similar project for the same client (that I didn't record) and had the task of minimizing bleed for that one, and would like to do what I can to alleviate the issue on the day, but still keep things simple for the kids. At least there will be no drums this time...
Thanks in advance for any insights, thoughts, recommendations, or advice.