I have heard the current production monopole Wisdom Audio systems, which use basically the same driver as the older dipole Adrenaline system. I was considering adding Wisdom Audio to my line (I'm a dealer). But I heard the same thing Brulee did - the sound was slow, and the top end was lifeless. The electronics I heard the speaker with were first class. I think the problem is this - the Bohlender-Graebner ribbons in the Wisdom Audio speakers are able to go down to 125 Hz, which is quite impressive, but also means they have to be made quite rugged. The strong, rugged diaphragms trade off a bit of top end. This is perhaps a reasonable design choice, but not one I could endorse. I did not pursue becoming a Wisdom Audio dealer.
