This may sound like a dumb question but since the sub has three drivers firing in different directions does this create the effect of multiple subs ?
It does give you more bass than a single 8" driver would otherwise, but it’s not like having separate subs individually placed. The direction they are pointing in is kind of irrelevant assuming they can all breathe.
Using three 8" subs you get the surface area of around a 12" sub, maybe a little less. The direction they are pointing in probably has more to do with aesthetic choices.
The reason for using multiple separate subs is to try to equalize room modes. The situation where you have big peaks and valleys in the bass response.
I notice it has no built in EQ. You absolutely want to use an EQ with a sub. It will make integration a lot easier. So will bass traps if you find you have big nulls.