Build Your Own Arcade Controls Forum

Main => Audio/Jukebox/MP3 Forum => Topic started by: tribasic on November 18, 2005, 04:27:56 pm

Title: Jamma Audio Confusion
Post by: tribasic on November 18, 2005, 04:27:56 pm

Hi,

I've been looking up tons of information on the Jamma audio standard. From what I understand, it's mono sound and your speaker must be hooked up to the L 10 pinouts of the jamma harness.

I have a Marvel vs Capcom arcade machine with one speaker. I am missing the speaker on the right side, so I will buy a new one and install it.

The Marvel vs Capcom PCB is stereo. So, does this mean I can wire the second speaker to the M 11 pinout of the jamma harness and get stereo?? I was reading that the M 11 pins are for the Right speaker. I also know that marvel vs capcom pcb has left and right audio out jacks, which could be hooked to an amplifier, but I wanted to know if I could wire stereo sound using only the jamma harness.

And if I did wire the left and right speakers to the L10 and M11 pinouts, what would happen? I don't understand why the M11 pinout for the right speaker is there, if the jamma standard is Mono.

If someone could explain this to me, that would be great.

TriBasic

Title: Re: Jamma Audio Confusion
Post by: Ken Layton on November 18, 2005, 06:24:26 pm

Jamma standard WAS mono. In the early 90's it was changed to stereo. Not every game has stereo audio out though.

Title: Re: Jamma Audio Confusion
Post by: tribasic on November 19, 2005, 12:03:30 am

Thanks Ken!

This is my first arcade cabinet, so I'm still learning lots of stuff.

Thanks to some of your past posts, I managed to get a nice clear picture out of my wells & gardener monitor! You seem to know a lot about arcade machines.

TriBasic