Who are some of elite sub woofers?


Looking to replace Klipsch 12d

So many choices.
Ag insider logo xs@2xawooof
I have a SVS SB-4000 with My Spatial M3-TurboS speakers and the SB-4000 is fast enough to mate perfectly with my OB speakers and I am very picky. For $1,500 I’m thrilled with them.
jhajeski" I’ll never buy another brand"
This kind of irrational, illogical, and kneejerk reasoning will severely limit, restrict, and confine your ability to improve, refine, and advance you’re Music Reproduction System.
I have a SVS sealed sub in my system. Gonna buy a second one soon. Very satisfied.
Plus one for a Rythmik or SVS. 
So, Millercarbon, you have low end that really sucks from full range speakers where you're locked in on position. And the cost is crazy for true full range speakers. 
Don't know what subs you've tried but, obviously not the right ones.