When we decided to transition from one center screen to three screens on stage, we knew that choosing the correct software would be an integral part of the transition. We chose ProPresenter due to its ability to handle multiple screens with ease.
We use a 27 inch iMac with an upgraded video card in the tech booth, which runs ProPresenter 5 and the Multi-Screen Module. The iMac feeds a Matrox TripleHead2Go, which splits the signal into three separate outputs. Since our cable runs are so long, we use HDMI to CAT5 converters so that the CAT5 is carrying the signal over the long distance. These feed our three projectors. Very simple setup and we are extremely pleased with the results.