In reviewing Ian's post again, I see it's the 1500-2 being used for mids and highs. The 1500-2 allows for 2250 dynamic Watts for each mid-woofer and tweeter array. I can't see why so much power is required given the 450W and 1350W figures from my previous post. This is particularly confusing given the active LFR1100 is specified for 4400 peak Watts.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated