I'm having transient nodes of thought on a new speaker cabinet design now. I wish I knew a thing about designing them. I kinda have an Idea but I'm not sure if it would be a good idea . I saw something on the web where a guy put an 18" altec into a tapered tube that went down into another larger tube it was called a mass loaded transmission line? each tube was 2 meters tall but he had a stack of other speakers too I was thinking of some kind of deflector above the speaker that would reflect the highs out horizontally since the horn would be pointing skyward. He said the bass was capable of reaching 5 hz. what are your thoughts on this Idea?