Gyruss Sound Question

ItsJustaGame

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Hey guys,

First attempt at hooking my Gyruss board up to my Jamma cabinet. What I did was wire an adapter, and everything seems to be working okay. Just want to make sure I've wired the sound correctly.

Gyruss has two speaker outs, but I have a mono cabinet. I hooked the the two speaker outs (pin 2, pin b from pinouts) up to the Speaker + and Speaker - (10 and L) on the Jamma Adapter. Then, I jumpered the two posts on the board behind the amps to turn the game into mono.

It seems to be working okay, but just want to make sure that I've done it correctly. Don't want fry my amps or burn the house down or something.

Is that right?

thank you, i'm pretty new at this.
 
Uh oh. Which is the "first" audio channel? Is it pin 2 or pin B on the pinout?

I think I'm just confused about how audio channels work.

Normal jamma mono channel is referred to as (Speaker +) and (Speaker -) and so has two pinouts from the boards, right?

How does stereo sound differ? There are only two pinouts on the Gyruss board. Shouldn't there be 4 (2 per channel)?

Forgive my ignorance.
 
Each audio channel is a pair; the signal (speaker+) and its reference (speaker-, which is often just ground).
Pins 2 and B are the first audio output. The second audio output is on pins 15 and S. The mono jumpering on the board makes it so that all sounds get amplified through the first channel.
 
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