I decided one input is all it needs. No sense in putting in two.
They sound nice. I'm happy with them. They aren't quite as loud as my previous 11kV.2 but they're loud and respond well.
It turns out it was best they were sent home because I had 10g wiring in the box(I have 1000ft of it because of a deal) and it needed smaller, so I was able to solder in some new stuff. Also, they sent me d4s instead of d2s, so I needed more wiring.