Of course, I was able to play some of my own selections and that's how I realized that there were tricky room modes at work. On some cuts, they reinforced the bass to a wondrously impressive degree but, on a few, it was overblown and indistinct.
That said, I do not hold that against the speakers (which I did like) but offer it as an observation that there is more going in most demos than the performance of the components.