garageCube

Thanks for your advice! Reassuring to know it will work. I suppose a Matrox Dual Head will do the same.

Thanks again,
Robbert

For a (small) theatre production I’m using MadMapper on a Windows laptop with a single HDMI output and a 1920 x 1080 Optoma short throw beamer. All content material is prerecorded in scenes. It works perfectly. Now I would like to double this setup with a second beamer as a backup during the perform...