I am researching this speaker for an associate of mine. I am very familiar with the cornerhorn, but this speaker, probably purchased in the days of mono, becasue there is only one, is massive, probably twice the width of a regular k-horn, about the same height, maybe a little taller. There are frequency adjustment knobs on the top right hand side.
I believe the owner said the folded horn is approx 150 feet, and is Goodman. Early 50's? The speaker reminds me in shape to a JBL Hartsfield.
Any info would be great!