One more question and I think I'm set...
I made a miniature prototype using the plans and I used old foamcore board and when i put it together, I notice that there was a major gap between the Cabinet Back Bottom and the Cabinet Back top... I don't think I forgot any pieces...(LOL)
Now I am a big fan of having an enclosed cab...(with a cat & kid, I cant help it...)

I guess that gap is so the cab has easy access to the monitor and possibly allow air to ventilate in the cab...(is it?)
Has anybody added any tweeks to their build?