Very NOOB, Jamma speaker wiring question…

[GoIrish75]

Hi all. Great board! So we stepped into the deep end with our first cabinet game, a 2009 IT Target Toss Pro standup (bag toss and lawn darts). It was a nice entry level price and plays nice, just needs some TLC by this rookie. I’m just getting my feet wet on gaming boards and getting familiar with JAMMA. So this machine has 2 speakers, but when I follow the speaker wire in the cabinet, one of the speakers wires were just cut off and are loose, and the other speaker is wire connected to 2 wires going into the JAMMA board. The sound obviously only comes out of one speaker since the other was just cut and left for dead. What are my options to reconnect or just plain connect that other speaker so sound comes out of both as it was intended from the factory? I have no idea what other ports in the Jamma would be for this, or since I’ve read that Jamma is mono sound mostly, how can I just get sound from both speakers so it sounds more balanced when standing in front of it playing? Could I just wire in the dead speakers into the live ones with the same Jamma ports or would that cause major crazy draw issues? Noob here, I can send pics If what I’m sayin is confusing or not explaining it right. Thank you so much.

[bobbyb13]

All this depends on resistance of those speakers and how much power that board puts out.

Those numbers will tell you how many speakers you can connect and whether they would be in series or parallel.

If you are lucky the speakers will have an ohm value printed on them and you can look up what the board puts out/can handle.

[GoIrish75]

Ok great, that’s a great start. They look like the original speakers (like car stereo speakers) so I bet (or I hope) they have info printed on top. How do you think I can find out how much power my board puts out and if it can handle 2 speakers? I have a manual coming via eBay that I think does or should have the wiring diagram, but not sure if that will give me any info on my boards power. If it can handle the ohms, would it be a possible thing to wire both speakers basically together  and connect to the Jamma board wiring and harness into just the 2 Jamma connectors? As opposed to 4 connections if the speakers were separate. What harm would it do to try it and see? Would I fry or damage a sound card/board or the Jamma board itself? I’d hate to be without sound because I went rogue. I see the CPU unit has an audio out pink colored port that I would imagine would play the sound if I were to plug in speakers….i wonder if using this with some long extensions and just getting some nice sounding computer speakers or speaker set with even maybe a subwoofer placed in the cabinet would be a better way to go and just skip the original speakers and Jamma wiring altogether….hmmm 🤔

[GoIrish75]

Since I’m at it, how do I go about getting the sound to play from the 3.5mm output Jack on the rear of the cpu unit instead of it utilizing the wiring coming through the Jamma board? I found others doing a 3.5mm output Jack cord into a red/white RCA split into a small 20W amp with power , and then the cabinet speakers wired into the amp. This seems like an easy solution and may be what I need. I just need to figure out how to switch the sound over…

[bobbyb13]

Wait for your manual.
You can roast components if you load them incorrectly.
Do you have a showcase style cabinet or a more traditional upright?
All the audio out jacks I am familiar with are green.
I believe pink is microphone in.

[GoIrish75]

It’s a traditional upright. The internals are all cpu based, and the back of the cpu has the green audio out. I see they make cords that take that single audio out and then end with a red and white splits RCA plugs that can be plugged into amps and then speakers wired into the amp. I was just wondering if or how the game would acknowledge now pushing sound out of the green port as opposed to the wired up Jamma board path.

[bobbyb13]

I would just wait to see how the manual says it was wired to start and repair it that way.

There is probably regular old audio signal coming out of that green jack and you could plug that into any old amp (or pc speaker system) if you felt like going to the trouble, but then you will need to power that amp also.

[GoIrish75]

So the Jamma board wiring diagram was helpful, and it does have inputs on the board for both a left and right speaker. Just out of curiosity, I ran an RCA splitter cord from the headphone port on the cpu and ran that into a small 20W amp which had speaker wire inputs for 2 speakers. I wired in the stock cabinet speakers and boom! Great stereo sound (and loud) without using the Jamma. I think I’ll leave it this way since it works really well.

[bobbyb13]

That will certainly give better sound than the jamma method can handle.
It just costs more and requires more parts and work is all.

Best of luck with the rest of the machine!