Almost ALWAYS. The kb speakers are my stereo monitor, and the Bose fills the rest of the room with even sound. For a really small venue, I take the tweeter out of the Bose, and just use the sub to add some "oooomph". The speakers in the 900 are pretty powerful, and the 1000 is touted as even better. we shall see.

** Sidenote:
Beware of using two line array speakers. Placement is critical to avoid dropouts, and cancellation. There are times when I tried 2 Bose towers, and wound up shutting one off, because it sounded better. They spread so wide that you get frequency cancellation in certain rooms. Listen carefully.