I've just finished this basschat 112 cab:
It's a slight variant in that it is built using 12mm birch ply and it is using the Beyma SM212 speaker with no tweeter/horn. It had its first test run last night at rehearsal where it sounded much better than the studio's Hartke combo I typically use there, a lot more focus and clarity. It was able to keep up with our weightlifter drummer and two guitarists too. Very happy with it.
Thanks to all the folks who worked hard to create the design and produce such professional drawings to follow. I think I've caught the bug now - I want to build another, maybe a 8 or 10 inch for practicing