I used to have a pair of the Berg ERs and they sounded really good, but were far from the ip. The DSP is likely a big part of it, and I see your point. They are probably the key to evenness at louder volumes and a low end that never seems to fail and crap out.
In my search, I also acquired an XS2104 from Unicornbass (http://unicornbass.se/site/bass-speakers/xs2104/). It delivers room filling and fast low end, which is great. It goes a really long way and can take all the power you want to throw at it. It can be had in an active version as well. If you like the flat response, I couldn't imagine anything better. But it's not as punchy and mid present as the Berg, which is what I'm going for this time. If you play five string, this may be the bees knees.
On my way now to pick up an AE212 which was for sale locally. We'll see what it does.