7, a series at Riverview November, 2010 and January, 2011.
We spent quite a while figuring out what to do for the lit device on top of the truss in this set. The final build was seven black boxes, with only four sides, made using 3/4 inch particle board (since that happened to be some scrap material we had laying around) and 60 watt lamps in workshop light fixtures.
We arranged seven columns of 10 foot truss with symmetrical depth, lateral position, and height on the stage and wired the top boxes to dimmers.