Hi Larry:larryh wrote:Sean,
Well that patent drawing is interesting. Its been some time since I owned the 810 and it seemed to me that the horn opened in one large front opening using the left wall as a portion thereof. I may be forgetting the way it was put together, but I don't recall the dual tone chambers they mention. I wonder if that is the same as the 810? Someone here surely has one though?
Actually, I'm David, (Joe_DS on phonoland.) There are a couple of patents for the Hinckley horns showing different designs. I remember on the old OTVMMB, one of the posters provided detailed photos of his Viva-Tonal tone chamber. It was either an 800 or 810--I don't remember which. (None of the images were captured by the Internet Archive, unfortunately.)
In terms of comprehensive information available, the Viva Tonal phonographs have taken a back seat to the Victor models, which is a shame, since they were well designed, and actually do sound quite good.