Why are 21 pin RGB cables only mono?
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Amano Jacu
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The scart connector has stereo sound:
http://utopia.knoware.nl/users/eprebel/SoundAndVision/Engineering/SCART.html
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This is possibly a bad idea, many (most?) SCART TVs and many J-RGB capable displays use only composite video for their sync signal. If you're going to do this I'd strongly suggest testing with your display first, or adding a switch to change the other output to Cvid or Csync on the fly.
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I did this mod several times...both composite and sync from the A/V port can be used to sync on scart TVs (donno where you got the idea that sync doesn't work). Of course you can use the sync pin for one of the stereo channels and leave composite untouched...
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Dreamcazman
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I know we are a little off the topic here, but anyways.
Neogeoman - I guess manufacturers make cables up using the composite pin for those with Scart connectors on their TV's that only accept composite input, not RGB.
If you need the composite signal, that's fine, just do what MKL already said and use Pin 7 (proper sync) instead for the stereo connection. Of course you have to make sure that the sync trace is cut.
Oh, and you would have to modify the RGB cable or make up a new one. <- maybe this is what you got confused about.
Neogeoman - I guess manufacturers make cables up using the composite pin for those with Scart connectors on their TV's that only accept composite input, not RGB.
If you need the composite signal, that's fine, just do what MKL already said and use Pin 7 (proper sync) instead for the stereo connection. Of course you have to make sure that the sync trace is cut.
Oh, and you would have to modify the RGB cable or make up a new one. <- maybe this is what you got confused about.
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Sorry for being a naieve Gringo but:
Even if SCART tv's get thier Csync off of the Cvideo lead (definatly true for many console systems with no sync outupt), you could probably feed the Csync to both pins.
Hell, most (or at least alot) of RGB monitors can be fed a Cvideo instead of Csync.
Even if SCART tv's get thier Csync off of the Cvideo lead (definatly true for many console systems with no sync outupt), you could probably feed the Csync to both pins.
Hell, most (or at least alot) of RGB monitors can be fed a Cvideo instead of Csync.
Dreamcazman
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norton9478 said:
What are you talking about? What pins do you want to connect the sync to?
Robert - Scart connectors do have stereo connections, it's just the Neogeo doesn't natively output stereo from the AV port.
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Amano Jacu
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Robert said:
Yeah, this got me confused in my first post too. Of course the scart connectors have stereo, what doesn't have stereo is the Neo Geo 8 pin DIN A/V out. Therefore, a RGB cable for the Neo Geo is wired only for mono, unless you do some mods.
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Dreamcazman said:
My bad, I thought that Sync and CVideo used seperate pins....
So I take it it's true that most TV's just strip the sync from the Composite video? Isn't this less-pure than using a Native Csync feed?
Dreamcazman
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norton9478 said:
Sure is, although you probably won't notice the difference that much, it all depends on whats being connected. With the early Neo's the RGB was great, but in the case of the later model Neo's, once you do the RGB fix and send the pure sync instead of stripping it from the composite signal, you can an improvement on top of the RGB improvement.
Sorry to bump this thread but it occured to me today that there are enough pins on the a/v socket to accomodate stereo sound. Glad to see someone's already started a thread about this.
If I do the rgb bypass mod and disable composite output, but still use the composite pin for sync then that means the sync pin 7 is unused. Can I then run wires from the headphone jack, one to the mono pin and one to the sync pin to output stereo sound from the a/v cable. Then all I need to do is rewire the a/v scart cable to use the left and right sound channels in the scart socket. Then I wouldn't need to bother drilling the case to install stereo jacks.
MKL, is this the mod you were talking about?
If I do the rgb bypass mod and disable composite output, but still use the composite pin for sync then that means the sync pin 7 is unused. Can I then run wires from the headphone jack, one to the mono pin and one to the sync pin to output stereo sound from the a/v cable. Then all I need to do is rewire the a/v scart cable to use the left and right sound channels in the scart socket. Then I wouldn't need to bother drilling the case to install stereo jacks.
MKL, is this the mod you were talking about?
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Adamaki said:
Of course. This is a mod for those who want to maintain the integrity of their system. But having jacks allows to use better cables and keep sound conductors separated from video conductors, so it has its advantages...
I don't get why Europeans bitch about Americans Mega molding their systems but they modify the Dim sockets on PC Engine and Neo's rendering them useless on NTSC televisions. In the end a Super Grafx owner in Italy will probably never sell his system and it will never leave Italy but what if a US customer would happen to accidentally buys the system. That one less super grafx in the world.I think that it is time that somebody does a true comparison of NTSC inputs to PAL scart input "I would if I could". The reason that I say this is because every person that I ever knew that lived in Europe said that there TV's where shit compared to US TV's, and they had a bad problem with the picture rolling. Are they wrong?
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Amano Jacu
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neo_X7 said:
I think that it is time that somebody does a true comparison of NTSC inputs to PAL scart input "I would if I could". The reason that I say this is because every person that I ever knew that lived in Europe said that there TV's where shit compared to US TV's, and they had a bad problem with the picture rolling. Are they wrong?
Well, I made some pics here:
http://www.neo-geo.com/forums/showthread.php?t=97931&page=5&pp=25
I don't know where your friends were, but I've been to USA and I prefer European TV's. NTSC= Never Twice Same Colour. The only problem we've had with videogames for a long while (other than having to wait a long time to get them and prices) have been 50 hz conversion slowdown and bars, but thankfully this is almost solved now.
About modding systems, I don't see where's the problem in trying to get the best picture possible according to your own set-up. If after that the system can't be used in another country then just don't buy it, it's not like everything has to finish in the USA. Manufacturers themselves make some games or system only compatible with one market. Is like wanting European people doing superguns or consolized boards to include NTSC encoders in case they finish in USA.
Amano Jacu said:
I didn't want to rub Euro neo fans the wrong way.
The people I work with were from Germany but NSTC TV's also rolled bad back in the pre cable TV's days. 
I have just seem a lot of negative comments from Euro members on the forum ever since the Neobritz came out, about NSTC members mega modding their systems. The reason I started this is because for years I read in video mags about the problems Europeans had playing import games on their TV sets but scart has seem to solve that problem. 
Amano Jacu
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neo_X7 said:I didn't want to rub Euro neo fans the wrong way.
Well, as I said I have no problem in people modding their own systems according to the needs of his countries, both Europeans and Americans.
I guess the problems you mention were caused by the fact that old PAL TVs would only accept PAL 50hz signals and not NTSC 60hz ones, therefore import systems wouldn't work on them (just as PAL systems don't work in NTSC TVs), but modern European TVs are PAL/NTSC 50/60 hz compatibles, and on top of that accept RGB through scart.
