I've checked out the avtalk forum, looks ok, posted the Q, but no replies.

a guy on pf suggested looking at Ted Jordan drivers. I must say the JX53 and JX92S do have possibilties, this had lead to searching out other 2-4" drivers, by Tangband and Hi Vi. The idea of minimal enclosure and no crossover ticks the right boxes. Of course I don't know how they sound ....