The Newsboys carry a 24-box JBL VerTec 4888 rig. This rig is deployed in an extremely wide range of venues, which makes for quite a challenge on a day-to-day touring basis. One day, they'll be performing in a 2500-seat theatre with ideal rigging points for easily rigging and flying cabinets for perfect coverage. The next day, the venue may be a 1000-seat church without any available rigging, causing me to ground-stack the speakers. The challenge is in making sure that the PA sounds the same in both venues.
Through the beginning of the tour, I work with the Front of House mix engineer to figure out how he wants the PA "voiced". Most engineers do not like the sound of a PA that measures perfectly flat across the audible frequency range. It takes time and excellent communication to come up with a frequency response with specific emphasis, dips (when I mix, I like dips at 250Hz and 1.6kHz) and slopes.
The challenge is to make a 12-box flown array in a bigger venue have a similar voicing as a 6-box ground-stacked array in a smaller venue. SMAART is an invaluable tool for this. Once the FoH mix engineer has a preferred voicing, I use SMAART to measure and replicate that voicing in each venue. I like to compare it to a painter's canvas - I try to give the "painter" the same white canvas every day so he can create his picture. Some days, the canvas is naturally white. Other days, I have to do quite a bit of work to ensure the canvas is the right shade of white before the picture can be created.