Anyone have experience with the new ATC active bookshelf speakers?

jackmonster makes a strong and interesting, albeit unintentional, point.  That particular model speaker may be considered so good that as your system improves incrementally, there is no need to upgrade those transducers.  Sounds as if someone from ATC was comfortable enough to throw that kind of ammunition at a 'moderately' priced active speaker. 

Regardless of rationalization, no amount of front-end can fix a substandard speaker, rather oft made worse as the front-end will brutally expose deficiencies of design and/or component choice of the maker.

I've owned/own 4 pairs of ATC speakers, passive and active.

Heard them at AXPONA, they were capable of very loud volume and had plenty of bass- actually too much.  Likely because of the close to wall positioning and small room.  Give them some room and go for them.  

I demoed the SCM 80 Passive at home before deciding on the SCM 100 Passive, the SCM 150 Passives were just too overwhelming in size.

ATC speakers are one of the few companies out there that can really handle 1000w+ amps with aplomb.

Very revealing, they'll show your system for what it is or isn't.

Just factor in the cost of some decent jumpers.

I wouldn't hesitate on pulling the trigger on a bookshelf version, maybe an active version would be better for a bookshelf version to save space.