Evidently the KLH 9 was an Art Jaszen design (he licensed the design to KLH because KLH had deep pockets). He couldn't afford to make/market them on his own.

Neshaminy Electronics went under in the late 60's or early 70's and Mr. Janszen tried to manufacture the speakers on his own. Evidently the company ran out of money in the mid 1970's.

Sadly, the model in my basement was one of the few speakers by Janszen that didn't have the electrostatic tweeter. They are better sounding than I expected, though. Very pleasant sounding and enough bass to do justice to an upright bass.