You are very successfully beating back any feelings of buyer's remorse I might experience. I think you're more excited than I am, lol.
Well, maybe not. I'm pretty stoked. It's a beaut. I'm cooking dinner right now, but in between tasks I went over the outside of it with a flashlight and I don't see a nick or scratch anywhere. Drivers are in great shape and move in and out nice, smooth n easy, no scratching or grinding voice coils. I flat out asked why he was letting it go for 900. He said he bought it used for $1100 and didn't feel it added a whole lot since he already has 4 subwoofers so he was pretty much just getting it gone to make some more room in his... room.
Yeah, I'd definitely need some dsp, but maybe not too much. The way I run the HSUs with their eq 2 setting and both ports open they roll off right around 20-22 hz too. They dig down to 16 in eq 1 with 1 port open, but I lose a little bit of mid bass with that setting.