need DIY rgbs bnc cable advice.

[deezdrama]

So i rgb modded my 3do and am using a 9 pin mini din connector like on a model 2 sega genesis/ megadrive.

I have hdretrovision cables and they work fine but wanted to use the 3do on my rgb modded 36" crt.

The description for the 3do rgb mod states to use hdretrovision cables or if using rgb cables then all attenuating caps/resistors need to be removed.

I bought a cheap $10 9 pin to bnc cable to test because I figured it lacked any signal smoothing caps/resistors...
I was right and the image looks good but now wanting to build a higher quality set of cables.

Is this worth my effort in anyones opinion? If so what would you suggest? Starting with well shielded bnc cables, cut in half and splice a male 9 pin mini din connector on one end?
Is there more to it than this? Does each signal conductors shielding and outer shielding all need grounded at the 9 pin connector end?

[jd213]

Yeah, making cables can be a PITA, and I dunno if I'd personally want to spend much time on the 3DO
(then again, I've probably spent more time refurbishing/modding Master System and Mark III consoles than I have playing them)

I guess modding an existing cable would be the way to go, unless you want to make a whole batch of cables. You'd probably want to check the output on a scope before and after modding, if you have the patience. There's various YT videos showing how adding components can improve the quality in certain situations, so it can be quite the rabbit hole...

[kitty666cats]

Make sure to get 75ohm connectors if you want the theoretical best image (though there’d likely be no perceptible difference on a short cable like a game console cable).



Once in a while one may come across 75ohm connectors that *do* still have the dielectric core - but might as well get the ones without just for ‘peace of mind’.

[deezdrama]

I ended up buying a few xbox 360 component cables because they are so cheap, well made/shielded.
I will just use rca to bnc adapters.

Im still waiting on my male 9 pin mini-din connectors.

Soldering all the connections based on the md2 pinout will be the easy part but im confused about the shielding.
Anyone know if I just need to tie the cables shielding to ground at the 9pin (console side)?

I think vga cables were the only ones that had shielding grounded on both ends but it used a magnetic ferule? to prevent a ground loop interference.

Its hard to find any info on this subject, its like the web was scrubbed of old info but ice mainly seen mentioned for analog video cables to just have shielding grounded at the console side to prevent ground loops.

Is this correct?

So would I tie just the outer shielding to ground or also any secondary shielding that may be on individual signal wires?

[jd213]

I haven't checked too many of my cables, but I get the impression that the shield is usually tied to ground.

Maybe check some of your other cables, and when you build your new cable, see if it makes a difference with/without the shield connected to ground.

[LDigital]

Maybe this would be what you are looking for?

https://www.retrogamingcables.co.uk/aud ... NY-PVM-BVM