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In the Forum: Horn-Loaded Speakers
In the Thread: Direct radiation in the Macondo midrange horn

Post Subject: A horn arcPosted by Romy the Cat on: 8/18/2014

Yes, Anthony, any horn by nature has what I call horn arc. At the bottom of the range the channel boost output, then the gain slowly decay and become almost like a direct radiator and then the output begin to roll off at HF by horn until the driver roll off kicks in.many people use the MF drivers across a few octaves of MF what indeed the driver acts almost like a direct radiator. I need to say that many compression driver in fact are very good direct radiator in bypass mode and there are many reasons for that.

Yes, from a perspective of "purest horn" the MF shall be divided by 3-4 drivers where driver use ONLY in the region of horn boost. Would it be practical? Hmmmm, I do not know. The lobbing of the individual relatable HF channel, the comb-filter distortions and issues with use or multiple or non-first order crossover in my view would create much more problem. What we gain if we do it? Just 6dB in most of the cases - I do not feel that it worth it.

I need to note that the conflict between "5 octave spread" and plying multiple MF driver has not theoretical resolution and could be explored only by imperative means. The specific of this of that driver and the way how it would be driven dives to a person a felling if it might be used in the application he wants. My Vitavox S2 does very nice in my view at 500 to 5000. I do have issues with it's sound upper but I also do have some issues with introduction of another upper MF driver. So, in a way the 5 octave spread of S2 was a compromise but how could be in audio to figure out if the compromise was worthy? Well, I wish to have answer to this question myself. I do feel that the result is acceptable. Could I do better? We always could. Will I do better? Hm, I do not know. It is all about priorities, If I compile a list of the problems that I hear in Macondo sound then "5 octave spread" of S2 driver will be not very high.

Rgs,
Romy the Cat

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