I am a PC user, It's the most flexible solution, however I can see clearly as day that current PC with dual-out is far from ideal : ergonomics are horrible, and there will be compatibility problems as application developers embrace Nvidia and AMD standardized 3D outputs (3DTV play and HD3D) which only support official 3D outputs Hdmi 1.4 and DisplayPort, and Windows 8 will make it even easier for developers by unifying these into a univesal DirectX 3D output.
As much as I love my current setup, I am eagerly waiting for a good demux box.
However the requirements on that box differs depending on what usage is expected.
Most people will consider hdmi1.4a enough since they watch BluRay, some TV broadcasts and games on PS3 or Xbox360.
PC users wouldn't be satisfied by that : PC users like myself want FullHD at 60Hz per eye.
At the moment Nvidia 3D Vision is leading the market with their proprietary DVI Dual-link system, but it isn't ideal since AMD does not support it as they prefer to use DisplayPort 1.2 or Hdmi @ 3GHz. The ultimate system needs to be compatible with everything.
Luckily, Nvidia's brand new graphics card claims to support both Hdmi @ 3GHz and DisplayPort 1.2, they haven't updated their official list of supported devices yet for 3D, but at least the hardware has what's required, so a universal solution is now within reach.
The ultimate demux box should then be compatible with Hdmi1.4 @3GHz, that's a minimum.
I however have some doubts about how many inputs the box should have. The main problem is how do you connect a PC and other sources (external BluRay player, TV set top box, game console) to this one demuxer.
I do not have an AV receiver yet (I'm planning this for some time this year) but I know that AV receivers are currently designed for Hdmi1.4 minimum specs and would not support 3GHz input. So you'd need two inputs on the demux box, just to make sure the thing is usable by both a PC and all the other home 3D devices through current AV receivers.
An other issue is surround sound with these receivers, how do you get the sound from the PC to the receiver while it's on a separate hdmi link.
The Hdmi audio return channel isn't supposed to transfer all audio channels, I don't think receivers would support 5.1/7.1 through the return channel.
All current Hdmi 3GHz graphics cards have only one Hdmi ouput, so you have to split the audio and video through one of these ways :
-use Hdmi for video and optical out for audio
-use DisplayPort for Video and you have the choice between Hdmi or optical out for audio
The easy way out is to use optical audio out, and then the user has more choices for video out (Hdmi or DisplayPort), because I am almost sure it would work but wouldn't be "ultimate" for BluRay movies but it doesn't change anything for PC games (since game audio is generated in real time)
The "ultimate" way would probably be to use hdmi for audio but I do not know if Display Port and Hdmi work simultaneously when playing protected BluRays, the HDCP protection scheme might cause trouble.
Anyways, back to the original question : What types of inputs the demux box needs : I reckon at least one Hdmi1.4@3GHz is mandatory, for PC uses and for future-proofing possible home systems upgrades.
A nice addition would be a 2-input hdmi switch so that we can plug both the PC and an AV receiver at the same time, however we could probably use a separate switch for that so it's not that important.
A nicer option for this secondary input would be to have DisplayPort 1.2 input so that PC users can have more choices (Hdmi or DisplayPort)
Originally Posted by ondaedg
One question I have is how does someone revert to a single projector solution for 2d?
My current solution for this is to clone video outputs and manually switch off one of the projectors.
Originally Posted by motorman45
2. a pair of 1080p native DLP or LCD, 3LCD, LcOS/D-ILA ?
3. Gain screen or not ? ( black diamond ? )
#2 doesn't have a unique answer, it depends on many factors like RBE sensitivity, usage for games or not, and most importantly : money.
#3 A white matte screen is the ultimate goal. There's a money factor in it though since it requires brighter projectors, which are expensive. High gain screens also have some fans for the light boost and for parasite light rejection. BlackDiamond claims to provide the best of both worlds but it's EXTREMELY expensive, it has it's fans though (see the BlackDiamond thread in the screens section)