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In the Forum: Horn-Loaded Speakers
In the Thread: If you were to start from scratch, what horn system would you build?
Post Subject: In-line injection channel?Posted by Romy the Cat on: 2/15/2012
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 haralanov wrote:
Actually I see the biggest benefit (besides the huge sound body) in the fact that such a configuration allows very precise adjustment of the way how the harmonics of each UB channels touch  the midrange, by simply dealing with the crossovers on each of them individually. This gives almost unlimited freedom of possibilities for adjustments (the only requirement is the man who adjust it should know what to listen/adjust, otherwise it is a wasted opportunity) and this degree of precision could not be achieved by using just one horn…
So, we are taking here more about partitioning the upperbass and introduction some sort of granularity of adjustments? Would it be as some kind “in- line injection channel”? I do not disagree with it but I would certainly question the practicality of it alone with cost/benefit ratio. I think if the identically amount of effort would be spend for other aspects then the benefits would be higher.
 
I would like also to point out that my injection channel idea and your idea of upperbass compartmentisation both come from presumed limitation of a single channel, would it be tonal, dynamic, size or any other limitation. My presumption is that if we have one single narrow band driver that severs an excellent purpose foe own operation region then I would not need to use injection and you would not be fantasizing about slicing upperbass upon 4 sub-channels.
 
I do get you message about enlargement of geometrical size of upperbass but I personally do recognize it as a need. If you support your upperbass with midbass horn (that by definition is very large) than you will not be worrying or expire any concern about the “size” of upperbass as midbass interaction with upperbass will do all tricks.  The point is that I feel that in your case the upperbass most likely the lower channel after wish the system goes non-directional. It is not my case and this why I might not feel any need to deal with directivity or size of upperbass. The partition of upperbass in order to further kill the inner-modulations or to write in some custom harmonics – yes I would vote for it. to get bigger “influence” of upperbass but make come from many geometrical mouths – this I do not buy.

The Cat

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