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In the Forum: Horn-Loaded Speakers
In the Thread: JBL 2226 2445 2405 3-way and a path forward
Post Subject: What are we talking about?Posted by Romy the Cat on: 1/26/2014
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 haralanov wrote:
You haven’t heard any important difference because you haven’t tried what I illustrated on the picture above.
 
Nope I did not as I do not feel that this type of experiment is even necessary. However, what I was caring about my MF I did not care about the lower range but only about the actual MF band path. It looks like you with your strategic orientation to “wider-rangeness” care about your MF in context of the lower octave you can get from the horn.  I have very different approach. It is like building an amp – you need to ask yourself what will be limiting the bandwidth: gain stage, filter, transformer  etc…I prefer it to be my explicit filter.  In a channel of acoustic system I prefer the same, not horn profile or driver roll off shall be filtration factor by my filter as filter will decay with know to me phases characteristic.  
 haralanov wrote:
And what does it mean you did “a lot of experiments”? Who defines what is “a lot” and what is “not enough”? In context of midrange horns you have to build at least 15-20 different horns with different profiles, different shapes of the mouth, different materials and so on, in order to judge which one fits closer to your requirements of how it should sound. This is valid for everybody who deals with horns, not only for you. I am amazed when I see somebody who is sticking his theoretically correct MF horn to his compression MF driver and then he just accepts the result! He "plays" with arranging the horn in space, with setting of the optimal off axis angle, with different crossover techniques, but none of these compensates the badly designed horn.
 That is all is valid criticism. I am sure that you have better designed horn ideas that you have implements and I hope they bring you a lot of happiness. I very much do not want to sound like I am expressing sarcasm. I do happy that you recognize my limitation and went much further and understanding and in implementation. It would be nice to learn from you if you wining to share some picture and descriptions. I still is not be so hard on myself as I well know that you and others you trying to experiment with horns installations or at least are trying to think that they do are in a way the continuation of my efforts. There is nothing wrong with it if you have honesty in what you do and able to recognize of result without ego evolved.
 haralanov wrote:
Just a short example: the horns with round mouth have the worst possible performance in terms of sound complexity and they are champions in achieving the so called “open, but closed within itself” type of sound, where the sound is perceived as it is a hostage close to the bottom of the horn, trapped inside (but still energetic and "jumpy"), not "breathing" freely in the air. This effect is greatly reduced when for example the horn has oval shape (or even better – complex, “brain acceptable” shape), especially when the width/height ratio of the elliptic contour is the correct one. Who defines what is the correct ratio? – it is the one who builds many different horns and then uses his ears to select the best performing among them. All the people who performed a lot of experiments know that for achieving a good realistic imaging – the MF horns should be shorter in the direction of the other L or R channel, compared to the direction toward walls
 Perhaps you are correct, I do not know, I did not deal with it. A few years back you were a strong proponent of single-drive speaker and clearly denied any horns. You had a lot of strong and confident reasons behind it. Nowadays you look like accepted horn topology and claim advanced practice with elliptic contour. You might or might not have any practical background behind of what you say. It is internet and everyone can say anything. Post the configuration of your elliptic installation, explain reason behind it and demonstrate your ability to answer question. That, my friend, is not just internet blabbering but the actual knowledge sharing.

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