I have about 40 PSW10's. Best bang for the buck in regards to a pinball upgrade.
I have a few for sale for $200 ea if interested.
I have a few other subs, but only the PSW10 has the line AND speaker level inputs, which make it the best all around sub for pins (imo).
I have 3 different subs and all 3 have the line and speaker level inputs and they aren't PSW10s.
I would avoid getting individual 10" subs when you can get a 12" that covers 3 games and sounds much better. You will forever think that PSW10s are awesome and great until you hear something with more ooomf. I have a Klipsch 12" that covers 5 of my games. I use a passive sub mixer from Pinnovators along with the universal connectors (works on any manufacturer). There is no additional conversion needed to line level. Just clip the universal sub connector to the cabinet speaker, through the mixer and straight to the line in on the sub. The mixer has individual volume controls on all inputs. It can handle up to 5 inputs/games. Since sub frequencies cannot be located by your ears/brain(they always seem to come from all around) it doesn't matter that the sub is 5 feet to the side.
Yes all games can play at the same time and it's not garbled, just very loud lol. I realize lots of people can't wrap their head around this but think about it. It's no worse than having voice, sounds, and music coming from 1 speaker. Yes it can handle all.