KLH Model 12 w/External contour control

Yes,
I had KLH 12 speakers (twice) in the early 70's and they were great speakers for their time. They were floor-standing speakers with a 12" woofer, a pair of cone midranges, and a dome tweeter. They had an external crossover which could be velcroed to the back of the speakers. The crossovers had four 3 way switches which controlled the level of the midrange and tweeter, as well as the slope of the crossovers. I have often wondered what they might have sounded like with upgraded wiring and crossover components. I sold one of the pairs to a friend and to mu knowledge thay are still functioning.

The KLH 12, which I once owned, are probably the best of the classical acoustic suspension KLH speakers. The drivers in the model 12 are the same as the model 5: A 10" (?) woofer, two light paper cone midrange, and a tweeter. However the enclosure is a larger solidly built floor standing design, with very nice wood venier.