Hello All, All you video folks out there, I could sure use some advice on this. Thanks in advance for your thoughts. I'm doing a video projector install in a theater soon, and I know there are a number of different ways I can wire this set up. I'm just trying to figure out the best way, while still maintaining a reasonable budget, bearing dependability in mind. We need to run a total of six projectors. The plan is to run two matrox triple heads, each controlling three projectors. Output from the computer is two thunderbolt ports. Cable runs are 50 to 100 feet to get to each projector, and the projectors have HDMI inputs (no DVI). We'd prefer to run a digital signal, as we want to project in 1080p. The long cable runs and the limited inputs are the challenge here. So, based on what I know about the matrox triple head, I think the chain will have to be something like this: Computer (Beefy Macbook Pro)- Thunderbolt to Display port - Into the triple head - Out of the triple head- DVI - D to to HDMI - HDMI to HDMI over Cat6 - Cat6 back to HDMI - into the projector Obviously I would have to run two of these set ups, with three HDMI to Cat6 coming out of each Matrox triple head. I hate to convert the signal so many times, and I worry about signal strength, although the HDMI to Cat6 will help with that. But this hypothetical set up just seems like a bit of a mess. I looked into optical thunderbolt cables, but a 100 foot cable is $500 - $600. For one of them. Ouch. And my understanding is thunderbolt can only run 50 to 100 feet if you use an optical cable. Otherwise, it maxes out at 10 to 12 feet. I wish matrox made a triple head unit with HDMI inputs and outputs on it. I'd love to use as few adapters as possible. Maybe some sort of video distribution unit? Based on my proposed outputs/inputs and the matrox set up, is there an easier or simpler way to do this?