Sounds familiar:
https://pinside.com/pinball/forum/topic/sb-100-no-sound#post-3966386
You could maybe try something like this, just think of a way to lock the single pins together. You can buy long female Dupont style housings if you want to change the single housings to say two 16 pin long ones without re-crimping (the crimp terminals on these cables are Dupont 2.54mm style)