Hi, I'm planning to make rgb cables for my snes and mega drive as the cheap ones I have are plagued with humming (gets worse the more brightness there is on screen). I have the connectors, but I am having trouble finding a suitable cable, can anyone point me in the right direction?
Cable is not so important, it must have minimum 8 wires in it. The SNES sucks anyway, at least I am not impressed by results with old SNES revision. Maybe I will rid off S ENC B coder at all and will use cxa1645m instead or will try RGB Amp. I have made custom PSOne RGB cable with pure c-sync and its really looks awesome. But the SNES RGB looks darker than comosite video and has problems with white and black pixels if they are presented on the same horizontal string.
Cable is important. It should be screened and pin 21 and outer pin of connector (if there is one) should be connected to act as noise filter. I bought an unscreened cable for my SNES and the noise was terrible, I took the connectors and used some screened cable to make my own and now there is no noise.
Second that you need decent cable. Cutting up a old VGA cable will get you a bunch of individually screened cables within it.
I'd heard VGA cables are a good source as I am indeed looking for individually screened wires, but so far I've tried three or so different vga cables with no luck.
Cheap ones on ebay are no good. Its much easier to tell in person. The ones you want are thicker than the cheap ones you see. I just raided the stockpile at work. I suppose you need to look at above cheap price on ebay to pick some up.
Yeah I've not looked into vga on ebay, just found old ones here and there. I have been thinking about running audio in a separate shielded cable, which would make a lot of the wires in a vga cable superflous (might not be a problem, depending on overall cable diameter), or alternatively needing a new outer tubing. Would such a solution with separate video/audio cables be overkill compared to just using a cable with individually shielded cores?
Really, there is no big need in cable where every single wire has it's own shielding. I used one of the most cheeper cable with shielding that covers all wires and it works the same way as vga (but vga is fat and hard to solder). The main interface that is more acceptable to interference is audio. The video if it is pure c—sync (75 Om 220uF) and RGB (each line with 220uF) it works fantastic. I do have fabric made SCART RGB (not from Aliexpress) cable with sync on composite video. It uses better cable but the image looks like "chess board" cause of sync. Of cource I tried to add LM1881 to that cable but it make only worse. So, at least for myself I find the answer — if the scource signal is bad — nothing will help. P.S. I have a few vga cable and the most cheaper works better. The most expensive among them with 2 ferrite circles and big cable produce a lot of interference, dont know why. I tried to use it with my PC and the result shocked me. So, right now I really confused about expensive "fat" cable.
Ill have to disagree. Cable makes a huge difference. If the cable is making a noticeable difference it's obviously not the source that's the problem if changing for a shielded cable improves things. I've had many cheap snes and saturn cables that you can hear an audio buzz when the display picture changes. Decent shielded cable, with the audio pairs having their own shielding within the cable and the buzz is gone.
Not overkill at all. Some cable makers prefer to do it this way. Check out this example on eBay (not mine, can't comment on actual quality) for inspiration: http://www.ebay.com/itm/RGB-SCART-E...893593?hash=item281da2b259:g:rtwAAOSwPYZU6h6W However, Bad_Ad84 is also right. With a well shielded cable, you can get quality results from a single multi stranded cable.
I've been making my own cables for a while now, and I've found a good, cheap source for shielded cable is shielded CAT6a Ethernet. I use the one here: https://www.amazon.com/Cable-Matter...1471150942&sr=8-1&keywords=50ft+shielded+cat6 Each pair of wires is shielded, so what I generally do is: Orange wire > Red Orange White wire > Red GND Blue wire > Blue Blue White wire > Blue GND Green wire > Green Green White wire > Green GND Brown wire > Sync Brown White wire > Sync GND I then ground the shielding by sticking some 26AWG magnet wire (with the coating burned off) soldered to one of the grounds, usually at the console side. I like to use magnet wire because it's solid core. Sucks that the drain isn't copper, but I always get good continuity on the other side of the cable between shielding and ground. And I run audio separately via cut up RCA cables (you could also use Coax or mini Coax, but they are generally more expensive) (make sure they're individually shielded and decently thick). My setup also doesn't require a 5v connection (everything goes into a CSY-2100 clone), so keep that in mind, especially if using a TV with native SCART or JP-21 inputs.
you need to ground each end so console and AV equipment are tied. but using the pairs like you have is good as it reduces cross talk, as far as I know the grounds are common anyway.. I DO MY CABLE CAVE MAN WAY! ME USE OLD VGA CABLE AND LOTS OF HOT GLUE AND JUST USE ORIGINAL AV CABLE FOR CRASH BOOM!
