Not in the same universe?
The topology, execution, and target market matters. At one time I had JBL M2's with 4 x 500w amplifiers and active XO's in this same room, so I do have experience with varied types. It's an entirely different topology for very unique needs (mastering), and is also far more costly. They could entertain neighbors several houses away if you choose. Its 8" sibling, the JBL 708p, would have done the job just fine too, but still the output isn't needed for my modest room. Sure, for some it's a great option, but even the X5's go quite a bit lower.
So far, I find the X5's bass very satisfying, plenty of weight and slam, but with incredible nuance that I doubt many powered speakers in pro audio could dream of. Certainly the powered woofer helps, though the mid/bass driver to AMT still has a passive XO. It's obviously well executed and the system remains very efficient. It does not require huge power, which is sometimes needed to overcome passive XO losses as well. The drivers in the X5 are not in any way comparable to full range electrostatics either, given their roots in pro audio, and are very robust.
Over the years, Clayton has explored a broad range of passive, fully active (external active xo and amps), fully powered (with xo/amps), and partially powered passive speakers like the X series. He knows the target market well, determined these are a good fit, and executed in a way that they perform very well for the intended home audio market.
Believe me, I wasn't exaggerating when I said "not in the same universe". I have three passive sets of audiophile speakers (Apogee Stage, Lipinski L-707, Spatial Audio M4 TurboS) in the house alongside a number of powered pro monitors (Jbl LSR6328P, KRK VXT8, Barefoot MM12) and the difference between ALL the passives and ALL the powered monitors in regard to bass power and weight is massive. This, despite the fact that, apart from the Barefoot, they are all roughly equivalent in specified bass extension. And sure, I can HEAR that the passives are putting out low frequencies; I just don't feel
it in anything like the same way. The music takes on a completely new aspect when the lower frequencies are driving it along; without this it just lacks what Steve Guttenberg calls "soul". I remember when I first got the JBL's and could hardly believe how what I had thought were tepid, lifeless, recordings suddenly come bursting to life. It was one of those "I can never go back" revelations that we relish.
And I have to admit the M4's have amazing attack and life, even more in fact than any of my powered monitors, but it's almost all coming from the mids and highs. Sure, the bass is remarkably well-defined but it just doesn't drive the music to anything like the same degree as the pro stuff does. So I want to be sure that the new models have a vastly greater sense of bass power before I upgrade.