I remember them from back in my early days at Radio Shack. They were a variation on the theme of the very popular Optimus-1 speakers. They were very solidly built and sounded quite nice. The interesting thing about them was that side-firing tweeter. You are supposed to point them at each other with the theory that they would help to fill the "hole in the middle" if they were spaced too far apart in your listening environment. Not quite omni-directional, but room filling just the same. Sort of like what Bose eventually championed and marketed many years later.
I think they would be excellent for use in a dining room. Low to the floor, not in-your-face, and the music won't intrude on or compete with conversations with friends or family.
Play around with placement in your listening space. I bet that you just may be very pleasantly surprised. Enjoy!