Summary: I recently purchased these as the solution to wanting good rear surround speakers without having anywhere to place floor standing speakers. They are driven by a SONY STR- DN840 and they sound fantastic. Installation was a snap and it was literally just cutting a hole and turning a screwdriver a few turns and done! I love how the driver and tweeter can be individually adjusted so that you can aim at the listening "sweet spot".
Pros: Easy installation, directional driver / tweeter, crisp clear sound at all volume levels.
Summary: Purchased 3 of these for LCR in a bedroom surround system. Mounted these in the ceiling and they work great. The feature of tilting the speaker towards the listening position is great. Recommend no more than a 150watt amp. Very effficient and sound great.