Tops has a Model 3 Jamma adapter for sale here:
https://www.tops-game.jp/products/detail.php?product_id=5321
As Twistedsymphony mentions, you can power the DSB2 from CN12, that's how it's powered on Daytona 2.
As well as the DSB2, SpikeOut and other games such as L.A Machine guns w/no DSB2, Daytona 2 w/DSB2......etc, they use both the front and rear sound channels, CN7 and CN8 on the M3 filterboard.
On the original Blast City SpikeOut config, both CN7 and CN8 go to a larger mixer which is powered by 12v, part number 838-13445. Then the small passive mixer Twistedsymphony mentioned, that small mixer mixes both DSB2 and the output from the large mixer. It's quite a convoluted setup.
That's the way Sega do it, there is some ground hum which I'd love to get rid of one day but the sound levels are correct when you do it this way. If you try to use 2 small passive mixers the sound effects are not at the correct level in relation to the music.
There are obviously other ways to mix the sound, but if there's a solution that simplifies everything that would be awesome.
I've also attached a pic of a home made loom for the sound showing the original config.
https://www.tops-game.jp/products/detail.php?product_id=5321
As Twistedsymphony mentions, you can power the DSB2 from CN12, that's how it's powered on Daytona 2.
As well as the DSB2, SpikeOut and other games such as L.A Machine guns w/no DSB2, Daytona 2 w/DSB2......etc, they use both the front and rear sound channels, CN7 and CN8 on the M3 filterboard.
On the original Blast City SpikeOut config, both CN7 and CN8 go to a larger mixer which is powered by 12v, part number 838-13445. Then the small passive mixer Twistedsymphony mentioned, that small mixer mixes both DSB2 and the output from the large mixer. It's quite a convoluted setup.
That's the way Sega do it, there is some ground hum which I'd love to get rid of one day but the sound levels are correct when you do it this way. If you try to use 2 small passive mixers the sound effects are not at the correct level in relation to the music.
There are obviously other ways to mix the sound, but if there's a solution that simplifies everything that would be awesome.
I've also attached a pic of a home made loom for the sound showing the original config.
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