This may not be the right thread to post this. I am copying the posting I did in another thread here hoping to get a quicker help.
Making a component to VGA cable for Infocus X1.
I made two cables using broken computer monitor cable (as one end) and solder 3 RCA plugs on the other end. It works just fine. The second cable I made is much longer than the first, about 28'. The first one is about 6' (minimum RCA cables). There is not apparent differences, but I think the longer cable has a little worse result (as you can imagine). I measured the resistance of the two ends. For the shorter cable, each wire is about 1-1.5 Ohms. The longer cable has 6 to 10 Ohms (don't know why the three wires have so much differences). The ground is about 6 Ohms. I *feel like* with the longer cable, the picture is not as bright and sharp. So, I am considering making another cable using CAT 5 ethernet cable as discussed here. The RCA cables I used are just cheap audio cables I bought from Dollar Stores (very thin copper wires inside). Will the CAT 5 cable give better results? Will it has less resistance than the RCA cable? CAT 5 cable has 8 wires in it, so it can't be that thick either. BTW, my longer cable has about 5' monitor cable plus 23' RCA (3 RCA wires bundled together, unshielded). Will the shielded ethernet cable significantly improve the image? I will not bother to make another one if there will not be big differences (maybe I should not expect big differences because I don't experience big difference with short and long cables
). During playing the movie, I don't really see the degradation of image quality, but I think when the player displays its logo (when not playing), the image is not as bright or clear) and some colors are not accurate.
The question is improving which one is more important, resistance in the wire or the shielding? I spent $4 dollars making 2 component to VGA cables and still left me with a bunch of spare RCA plugs
. That's really cheap!