How do Dunlavys compared to new stuff?

Why wouldn't other audio companies mimic this design? It sounds like a darn good one.

Kclone, easier said than done. Other companies might not have the technological know how, be willing to hand match components and tune each pair to a reference, deal with the large size and weight. Too many other companies seem to be more concerned with building uniquely voiced speakers, rather than accurate ones. The sad part is that John Dunlavy's health failed him before he could pursue his even more promising designs. It would be nice if someone could purchase the rights to those designs, develop them, and bring them to market.

Lipinski Sound speakers do seem to mimic the Dunlavy design.

One unresolved mystery to me was (I could be wrong on this, as rumors abound)that Mr. Dunlavy did not believe that speaker wire made a difference.
This is not to imply that all wire that 'costs more' is better, but that wires that are well conceived, made of purerer grades of copper (silver/gold)can sound better.
I've been involved in too many 'blindfold listening tests' to discount that. But the last I was aware he discounted this...odd it seems for someone with his knowledge.
I'll gladly fold if someone knows this story more intimately.

John Dunlavy didn't believe reasonably(?) standard wires made a difference. He claimed that audio reviewers regularly could not discern the difference in cables in his "blindfold listening tests". With that said, he did develop and market wires. His argument being that they followed sound engineering practices, but he still maintained that the differences of his cables and lamp cord were inaudible. The man didn't pull any punches.