I think a lot depends more on the efficiency of the speakers than how many watts they have driving them. ClassD amps, on the whole, don't deliver the sheer oomph that ClassA or A/B amps do (the traditional, heavy transformer types), so 2000W isn't QUITE what you would expect. Plus, Mackie make no detailed specs available yet, so 2000W at what %THD? RMS or peak?

We don't know yet. They may very well need 2000W at their specs to equal 1000W of JBL or QSC (who tend to be much more 'techie' with their spec data) power, we don't really know yet. Peak volume seems to be comparable to QSC's K series (the 10" QSC's peak volume is about the same as the Mackie 12", so where all that extra power is going, I don't know). But interestingly, the QSC's claim only 1000W continuous, but 2000W peak, so this may be a more accurate indication of what the Mackie's true power output is at.

The QSC's (which a few friend's have, and I have heard and played through) interestingly also have a 1.75" horn diaphragm, so you may very well be looking at Mackie's answer to the K-Series QSC's. If the Mackie's compare sonically with the QSC's, which are among my favorite small, powerful speakers at the moment, as the price is similar, they may have a winner.

But still rather more than most here really need...