What I love about the bass from the actives in my 4000 cu. ft. room is that it's not offensive. I can listen uncorrected and it is very good. I can't say that about any other speaker I've tried in that room. And yes...a sub is needed there...but not in my living room. There was no benefit with a 500, 600 or 800 in the living room. I also tried two 500s for good measure.

The actives continue to amaze.

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