How to setup an audience display

Hi, I don't know if this has been asked, I tried searching both on the forums and the Internet with no luck.

How do you setup multiple consoles for the audience to see the carnage? Example: 2v2 Halo 3 with 1 station (console, tv, audio) per team plus projector for audience.

I know with PCs, you can spectate on another computer to display what is happening on a screen for all to see, but can it be done for XB 360, PS2/3, Wii?

You would need a component video or hdmi splitter.

Component Video Splitter

HDMI Splitter

I can see the splitter work for 1v 1 games like fighting sims, but I don't see how it will work for games that are larger. Like Halo 3's 2v2 and 4v4 slayer tournaments.

Maybe I am not seeing it right in my head to follow.