They will get very loud on a plain baffle.
They can soak up a lot of power without complaining.
I run mine with 14wpc of tube goodness, but several others have used them with up to 150wpc of sand.
The problem with the B200s is going to be integrating them with a sub.
Their rolloff is very shallow, so unless you are going to cross them over, they can cause issues.
They also make very little bass on the baffle by themselves - but the mids and highs and presentation are killer.