Well fwiw I use thre 12’s in my system. I’m good to about 14hz…
Jus sayin…
This is before the house curve. Still, in your small sealed room I think the 212 is a great choice. That’s just my opinion. My personal upgrade path has either fv18’s or devastators, which will probably be the latter since I can customize their size to my room in an architectural way.
Just sayin, I would write of the 12 just because it’s a 12.