How do I do this?

[BrianKilpatrick]

Hey Guys,

I'm relatively new to all of this and wanted to get your help. We have left & right projectors that always show the same image fed from power point on an iMac-->VGA splitter. We also have a rear TV screen for lyrics/time being fed by another computer. There is also a wire run from the stage to the booth in case a speaker wants to use their own laptop.

Now, we want to switch to Propresenter and use the multiscreen support to use one computer for the projectors and lyrics/time. I understand we would have to use the Matrox Dualhead2Go box. But we also want to be able to have the option to have the stage input displayed on the projectors & still have the time monitor from the computer.

I was initially thinking:

iMac & stage input into
2 input switcher: (input one - iMac, input two - stage) into
Matrox DualHead2Go (if clone mode is possible when stage input is on)
But what if I wanted to have the stage input on the projectors while the Time monitor is still on? I don't know much about VGA matrixs but is that what I would need? How would it come together? Thanks!

[Borggren]

I would recommend a 4x4 VGA matrix.

Input 1: Matrox DH2GO 1
Input 2: Matrox DH2GO 2
Input 3: Stage

Output 1: Projector left
Output 2: Projector right
Output 3: Rear screen

That will give you total flexibilty, and a spare input/output on the matrix for future expansion.
The projectors and screen will loose sync signal when changing between the matrix inputs, so you will see short glitches i the picture.