Naomi 1
It turns on and plays fine but there is no sound. Im hooked up with the jamma rev a naomi i/o in my NAC. Does it not pull mono sound from that?
Also when i go to the test menu, in the sound test the left and right speaker are turned off. I can turn them on but as soon as i exit the sound menu and go back in theyre turned off again :/
Naomi 1 - cant turn speakers on in sound test
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Naomi 1 - cant turn speakers on in sound test
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Re: Naomi 1 - cant turn speakers on in sound test
What I/O do you have? Have you tried with speakers outside the NAC? Do you have another cart to test with maybe somethings wrong with the cart your using?
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Re: Naomi 1 - cant turn speakers on in sound test
The regualr sega naomi i/o board, rev a.GeekMan1222 wrote:What I/O do you have? Have you tried with speakers outside the NAC? Do you have another cart to test with maybe somethings wrong with the cart your using?
How do i do it with other speakers? I dont have an amp or anything , its connected straight to the jamma harness from the i/0. Doesnt that mean i should have mono sound?
I read somewhwre that theres a jumper i have to set from rca to mono, is this true?
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Re: Naomi 1 - cant turn speakers on in sound test
I wasnt aware of a jumper ill have to double check real quick. If you have any kind of powered speakers you can plug the rca output from the naomi into that to test. But im not sure if you said the test tones played fine or not?
I assume you have the Sega I/O with the built in sound amp then? Like this? http://i.ebayimg.com/images/g/-zoAAOSwN ... -l1600.jpg
If its like mine the 838-13683-93 then there is no sound amp and the only jumper on the board is Jp1 but thats for changing something with the kick harness feature iirc http://wiki.arcadeotaku.com/images/thum ... 93-pcb.jpg
I would assume you would have some sort of sound even if its not a stereo cabinet i could be wrong.
You do need an I/O with a sound amp or an external amp of some sort to boost the reference audio signal coming off the RCA connectors on your Naomi .
I assume you have the Sega I/O with the built in sound amp then? Like this? http://i.ebayimg.com/images/g/-zoAAOSwN ... -l1600.jpg
If its like mine the 838-13683-93 then there is no sound amp and the only jumper on the board is Jp1 but thats for changing something with the kick harness feature iirc http://wiki.arcadeotaku.com/images/thum ... 93-pcb.jpg
I would assume you would have some sort of sound even if its not a stereo cabinet i could be wrong.
You do need an I/O with a sound amp or an external amp of some sort to boost the reference audio signal coming off the RCA connectors on your Naomi .
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Re: Naomi 1 - cant turn speakers on in sound test
I have the regular i/o that comes with naomi, same one as yours
This:
https://retrogamingstuff.files.wordpres ... -rev-b.jpg
No test tones play at all. The test menu says right and left speakers are off and then in the game settings sound test no music can be heard
So through the jamma i cant get sound on a naomi?
This:
https://retrogamingstuff.files.wordpres ... -rev-b.jpg
No test tones play at all. The test menu says right and left speakers are off and then in the game settings sound test no music can be heard
So through the jamma i cant get sound on a naomi?
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Re: Naomi 1 - cant turn speakers on in sound test
Ah ok, yes. What you will need is some sort of Audio Amplifier to connect between your Naomi and your speakers in your cabinet. The I/O its self will only handle controls not sound.
You can buy a sound amp of some sort and splice it in some how with the speaker wires or find an official Naomi Sound amp.
I have not done this mod my self yet (i just used external pc speakers.) so Im sure other members have better advice on this issue.
You could get something like this, https://www.amazon.com/Pyle-PFA300-90-W ... =sound+amp
You can buy a sound amp of some sort and splice it in some how with the speaker wires or find an official Naomi Sound amp.
I have not done this mod my self yet (i just used external pc speakers.) so Im sure other members have better advice on this issue.
You could get something like this, https://www.amazon.com/Pyle-PFA300-90-W ... =sound+amp
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Re: Naomi 1 - cant turn speakers on in sound test
Another budget option for an amp: https://www.parts-express.com/kinter-ma ... mpaign=pla
There are plenty of budget options out there, including bare PCB. Don't know the wattage of the speakers in your cab are, but most of mine are 4-8w @ 8 ohm, so something like this is more than sufficient.
There are plenty of budget options out there, including bare PCB. Don't know the wattage of the speakers in your cab are, but most of mine are 4-8w @ 8 ohm, so something like this is more than sufficient.
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Re: Naomi 1 - cant turn speakers on in sound test
I can't really help with your problem.. but I know you won't get any sound if the volume pots are not wired up properly (on a standard jvs setup anyway) .
I do have a spare Naomi amp if you need one.
I do have a spare Naomi amp if you need one.
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Re: Naomi 1 - cant turn speakers on in sound test
Edit: Nvm. I answered my own question actually lol
That being said, http://wiki.arcadeotaku.com/w/Astro_City_Stereo_Wiring has really useful info and I plan on doing it my self.
That being said, http://wiki.arcadeotaku.com/w/Astro_City_Stereo_Wiring has really useful info and I plan on doing it my self.
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