Allen Woody Rumblekat bass, how much chambering on this bass?

Hi All

I have an opportunity to get one of these basses and was wondering about the extent of the chambering on this bass and what effect it had on this basses tone , I have seen some people refer to this as a chambered body and some refer to this as being semi hollow, I guess that if there is enough chambering in the body then that pretty much effectivly makes it semi hollow, anyone able to elaborate further on this? thanks