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JAMMA to NAOMI at 31KHZ - Does such an adapter exist
Posted: Wed Mar 24, 2010 6:13 pm
by OldFoo
I do not have a tri-sync monitor.
All of the Jamma adapters i've seen put out 15Khz.
I know I can use an upconverter but would like to minimize number of components
I have a couple of questions
What are the current options for 15Khz?
Which is the best option for 15Khz
Any avaialble that suport 31Khz?
Thanks
Bob Presutti
Posted: Thu Mar 25, 2010 10:04 am
by OldFoo
by-pass adapter and vga cable direct naomi to monitor

Posted: Thu Mar 25, 2010 11:21 am
by OldFoo
you will also need a upscaler its on on of my list of projects to do have the upscaler just need to get a river service jamma adaptor to see if i can get it to work,
will need to wire the upscaler inline to the jamma convertor t alow for jamma games to play on a 31k monitor.
Posted: Sat Mar 27, 2010 2:01 pm
by OldFoo
ALLPRO wrote:by-pass adapter and vga cable direct naomi to monitor

Hi Thanks, but source PCB output is 15 KHz.
Was hoping someone had come out with new JAMMA-JVS that upscaled the video alao (or gave option to set 15/31)
Thanks
Bob Presutti
Posted: Sat Mar 27, 2010 2:02 pm
by OldFoo
MaNiAc wrote:you will also need a upscaler its on on of my list of projects to do have the upscaler just need to get a river service jamma adaptor to see if I can get it to work,
will need to wire the upscaler inline to the jamma convertor t alow for jamma games to play on a 31k monitor.
Thanks,
That's what I figured. Was hoping someone came out with something new.
As far as the adapters that are avaialable now which is better
Riverservice?
Namco?
Other?
Thanks
Bob Presutti
Posted: Sat Mar 27, 2010 4:08 pm
by OldFoo
Posted: Sat Mar 27, 2010 5:41 pm
by OldFoo
use that converter only if you want play 24k games, i tested many standard 15k games with it and
1) you need to change settings every time
2) picture quality is S**t.
with 24k games is awesome
best jamma to jvs adapter are konami and namco because are lagless. riverservice one have some lag.
Posted: Sat Mar 27, 2010 11:47 pm
by OldFoo
I use
this without any problems. That has been discontinued and replaced with the one linked earlier.
Picture quality looked OK to me (MAME still looked better), and since I only have Konami PCB boards (TMNT, Simpsons, ect.) I never have to change the settings.
Posted: Wed Mar 31, 2010 6:18 am
by OldFoo
I'm using the same converter with a 21" Lcd pc monitor and it works perfectly