Those do look like air core inductors and poly caps. Decent looking XO, though I would have thought beefier resistors for PA (totally adequate for the home environment). Only legitimate concern I see, is that PA components usually require a lot of effort to make smooth and this XO looks too simple to do that. They probably could have linearized the frequency response more with a more complex XO, but that would increase the cost of the speaker and is also not that desirable for PA use. I might sound like a broken record, but this is the draw back to using PA speakers in the home. The goals are different. One other thing, scale is tough to tell, but the size of the components tells me they crossed high. Again, for PA this is desirable to achieve greater power handling, but when it comes to midrange clarity the woofer breakup starts to become the enemy. I'm speculating at this point because I don't know for sure the component values. Another broken record thing I keep repeating. The only PA XO I've seen that defies this problem is the Yorkville U215. Its XO is complex and high quality.
The woofer does look to have a small motor. The stamped steel frame is also quite large with little room for ventilation. I have to speculate, can't say for sure, but its possible they're over exaggerating their sensitivity on the spec sheet (it is Behringer, and I do buy their products so that isn't a snob comment), or the cone is very light to make up for the weak motor. If the later, then woofer break up with begin fairly low in the frequency response but could be a gentle ripple rather than a sudden spike of SPL.
All these decisions I see in the design on the part of Behringer is consistent with a value orientated PA speaker. Thankfully in this day and age, these affordable products no longer mean absolute crap. Behringer undoubtably spend a good chunk of engineering time designing the XO well, to achieve those targets. Not just a simple off the shelf XO that simply protect the tweeter.
Sorry I have to speculate a little bit rather than know for certain. More photos would help. I haven't followed this thread thoroughly. Just lightly since imagic posted his review.