I'm somewhat fascinated by the development of this speaker and I enjoy tracing the evolution of it. Thank you for taking the time to share!If someone wanted a 1 cu ft cabinet and the wide one was the only one available, I would have used that one. Same for the .75 cu ft. So if you have the fat one, it's either 1.0 or .75 depending on what was ordered.
Randomly, I had found this a while back... Jantzen Audio still has it up! even though these cabs are no longer available: