See if you like Andrew Jones take on active vs passive(about the 2:00 min mark he gets on a roll) The way he describes being able to match a class D amp for the bass driver and then class A/B amps for the midrange and tweeter because you get rid of the limiting factors in a passive network sounds pretty "pure" to me. After watching this video he makes a VERY strong case for the advantages (both SQ and price point) for active:
"The ($750 active) speakers are so good they can do justice compared to the same speaker in the passive version matched with $4500 of electronics" (6:00 minute mark)