jpahere, I hat to be a stick in the mud but B+W does a good job designing it's cross overs. In my experience you are going to wind up pulling out your hair trying to get the system to sound right. I think you are much better off with something like a 100watt/ch Class A amp, perhaps a lightly used Pass amp. Used JC 1's would also be a great choice and because the new JC1+ is out a lot of old JC1s should show up on the market soon.
As a note to others considering this sort of approach dynamic speaker do not benefit much from bi amping and frequently wind up worse. You are much better off adding two subwoofers with both high and low pass filters.
As a note to others considering this sort of approach dynamic speaker do not benefit much from bi amping and frequently wind up worse. You are much better off adding two subwoofers with both high and low pass filters.