Here is an album of pictures of the speakers if anyone can tell me more about them from there
Also, if this is not the correct place to ask this please let me know.
I had a pair of their smaller brothers in the late 70's. I discovered I like a larger more impactful sound than bookshelf sized speakers but, I had to admit they had a very open/airy sound about them.
Unfortunately, they were later stolen....so I don't know what the end of their story (with me) might have been.