AVS Forum Special Member
Join Date: May 2001
Location: Sunnyvale, CA USA
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I ran my pair of Definitive BP8s for two channel music for 7+ years, and recently added a second pair of BP8s for side surround and C1B center (which I'll swap for an original C1 this week).
Mostly, I bought the Definitives because I usually lack the patience to sit in the narrow sweet spot of direct radiators, and was therefore willing to trade excellent imaging I'd rarely experience for an acceptable sound stage that would always be there. In theory, this is not relevant for home theater. In practice, it means I can turn off my center speaker thus moving the voices down to the middle of the screen instead of 6" from the top and still have them anchored halfway between my mains regardless of where I sit on my couch (this gets rid of slight voicing differences too, although I'm hoping those go away once I have the older C1 with a soft dome tweeter that matches my mains).
The midrange is somewhat colored, and top end a bit forward (so if I could live with the imaging, I'd probably have bought a pair of NHTs). Placed right (they're sensitive to placement), bass response doesn't match Definitive's optimistic 30Hz spec, although it's tight and flat (apart from room resonance) to a measured 40Hz (moving closer to the wall gains bass but hurts the midrange and imaging).
One other caveat is that they are less receiver friendly than other speakers (minimum impedance is 3.2 ohms).
Finally, I'd be surprised if you could place the ones with built-in powered subwoofers to get decent (in terms of extension and quality) bass, midrange, and imaging.