I recently played a gig at an outdoor venue (papaboos.com). They moved the stage this year and now we had a much wider space to fill. I put my L1M2 on the stage behind us and put the S1s at the front of the stage pointing to the wide audience.
When I went out front to hear the system with canned music playing through it, I found that the S1s were so loud that I couldn't hear the L1M2. I was shocked. I ended up balancing the two systems by turning up the master on my T1 and turning down the S1s which were still loud.
This system really did a killer job at filling the whole area!