Hi Norty
Yes, there was a balcony with mirrors fitted to the edge and glass panel railings around three sides of the room. The mirrors and glass paneling at the back of the room, above my head just out of shot in the video, had to be covered up and the lateral distance of the beams to the two side balcony's had to be checked. As you can tell in the video, the Y axis of the master projection zone is set very small, about 1/2 the height of the balcony railing.
@ Felcom. With the balcony open, the club capacity is 500 and it may look bigger but the stage was only about 12m away from the control area.
This was the first time I have done a gig with the control area at the back of the room and I have to say it made the night far more enjoyable for me. As to how 700mW's can do better than 3W, You've got me stumped there
Thanks for your kind comments guys.