Long ago I had KLH12s. They were the first speaker system I ever bought, rather than designed and built. The drivers are identical to those used in the KLH5, but the enclosure was floor standing, and heavy, and the crossover was "outboard" in what you call the "contour" controls. This was perhaps the best of the early AR and KLH acoustic suspension speaker systems. Certainly the best ever made by KLH except for the electrostatic KLH9.
The drivers were good in their day, but I am sure that age has taken its toll on the ones you have. I don't think anyone is going to build the enclosure, but perhaps someone still has the speakers and could use spare drivers.
The drivers were good in their day, but I am sure that age has taken its toll on the ones you have. I don't think anyone is going to build the enclosure, but perhaps someone still has the speakers and could use spare drivers.