View Full Version : Help needed rigging PC to projectors via phono leads
7th January 2005, 06:08 PM
How can this be done... i need to rig my PC to two projectors (which are fixed to a wall) and only have access to the two phono leads. At the back of my machine i have a avalible DV port in graphics card.. how do i convert the signal from my DV port across to the two Phono leads?! is there an adapter to do this?!
7th January 2005, 07:16 PM
phono leads as in audio cables?
if u wanna go that route
u'll need a dvi-to VGA Adapter and a scanconverter
best with a composite and s-video output
(two outputs for two projectors)
and adapters for the audio cables
else consider wireless transmission if the distance is not too big,
no interferences from other devices, and if u can live with the signal loss and lag....
8th January 2005, 11:05 PM
what other route is there to rig projectors up to the computer? have you any suggestions about a setup? DV converter? what will do the job? this is an area i no little about and need to find out quickly so advice would be much appreciated.
9th January 2005, 01:41 AM
ok......basic's whats the graphics card are you useing? because i presume, but could be wrong, that you are trying to output/project some part or the whole of what is being played by your computer soft
i ask this because, and again i could be wrong, i have never seen a graphics card with hdtv port and not a svhs or phono/composit/whatever you what to call them conections (unless the card needs a dongal) that is not part of a graphics card
9th January 2005, 01:30 PM
grpahics card is a GeForce 128mb (not sure on the model no.). Has VGA port for monitor. DV port where i have been hookin up a second monitor.. and a circular port which i dont no what is for. I will be using resolume to create the visuals and previewing them on my monitor and was wanting to output the visuals on to the projectors (like i do with the second monitor)
9th January 2005, 02:05 PM
The circular port is most likely s-video, which can be easily converted to composite for trasmission down phono-style cable.
You'll need to get an s-video to composite widget (check your local electronics shop).
If the cables to the projectors are fairly short, you may be able to get away with a simple splitter to feed them both from the s-video out of your gfx card. If there is any real length, you will need to buy a distribution amplifier to proviude decent signal strength to the projectors.
9th January 2005, 03:21 PM
Often on nvidia card they don't have svideo connectors directly they look a bit like them to the untrained eye (same round shape) but you need a converter lead that came with the card (with svideo and comp outputs)
So don't presume that the round connector is a direct svideo.
If you have a dvi connecter then I believe all dvi-svideo/comp/etc converters are the same it doesn't matter what make of card you have.
9th January 2005, 08:13 PM
i have a 128Mb Geforce 4, the circular port in the centre of my card is not s-video. The cable supplied with the card splits off into a composite video out and s-video out, and another moulded plug with composite in and s-video in.
I would also recommend upgrading your drivers to the latest nvida ones if you intend on using the video out, i had no end of problems trying to get it to work properly with the drivers supplied with the card. Although the first time i attempted that was two years ago so you might have decent drivers, i would always recommend upgrading to the latest available.
9th January 2005, 08:50 PM
i've just had a look at the circular port an ive looked up a s-video connection on google and im pretty sure that is what it is. if so this will be sorted as it should only cost me about a fiver to get the composite conveter and splitter cable. cheers for the info anyway people, helped me out a treat!
9th January 2005, 09:37 PM
Actuly had another check its not s-vid but a video out an ive got a cable that came with the card.. so all shud be alrite. (hopefuly)
19th January 2005, 11:52 PM
Actually a lot of N-vidia cards use S-Video out, and if possible I highly recommend using S-Video over Composite. The image quality is much better. Make the club spend some bucks for the new S-video cables. Also, check the inputs and outputs on the projectors, because some nicer ones have monitor out capabilities so you could daisy chain the 2 projectors.
At my previous club I cabled to 4 projectors, 2 plasmas, and 6 HD TV's. If you're in the US, Radioshack makes a nice little distribution amp taking composite or S-video inputs then amplifying and sending 4 S-vid and 4 composite feeds out for $45. If you don't want to buy that, see if you can send s-video to one projector and composite to the other, and I think you'll be able to notice the better quality coming through S-video
Best of Luck
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