Jammaboards MVS to JAMMA adapter

Hewitson · Feb 8, 2011

I'm referring to the adapter that converts an MVS for use in a JAMMA wired cabinet. Can someone please tell me the value (or the colours) of the two resistors used to attenuate the audio before it gets combined into a single channel.

I don't believe combining them without resistors would result in clipping but better to be safe than sorry.

Thanks

Xian Xi · Feb 8, 2011

Hard to see, looks like White, Orange, Gold, Gold which would make it 9.3ohms?

shadows · Feb 9, 2011

Xian Xi said:
Hard to see, looks like White, Orange, Gold, Gold which would make it 9.3ohms?

Correct.

Hewitson · Feb 9, 2011

Seems these are used as a dummy load for the unused channel rather than to attenuate the signal then.

Thanks

ttooddddyy · Feb 14, 2011

If you are running a jamma board on an mvs harness just connect the mono speaker between pins L &10. No need for any resistors.

Hewitson · Feb 14, 2011

I'm wanting to do the opposite.

ttooddddyy · Feb 15, 2011

http://www.hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf

You only need to add the select up and down pins d & 26 for a multi slot.
s 15 & t 16 for the coin slots and the audio is straight forward.

Like this

Hewitson · Feb 15, 2011

Yeah I realise that mate, what I was wanting to do was combine the two stereo outputs into mono before they reached the speakers.

I think I have decided to just go for the jammaboards adapter.. Anyone got one for sale by any chance?

Jammaboards MVS to JAMMA adapter

Hewitson

Metal Slug Mechanic

Xian Xi

JammaNationX,

shadows

Mature's Make-up Artist

Hewitson

Metal Slug Mechanic

ttooddddyy

PNG FTW,

Hewitson

Metal Slug Mechanic

ttooddddyy

PNG FTW,

Hewitson

Metal Slug Mechanic