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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: Only the subjective reality is versatile - the true reality is notPosted by haralanov on: 2/17/2012
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Romy,
 Romy the Cat wrote:
Remind you that horn not only does that but it performs acoustic transformation gradually.

Yes, I do agree with you about that. From both theoretical and practical point of view it is 100% true. But the important question is where are the practical listening benefits of it, when the brain is not disturbed by the slightly faster changing pressure around the boundary of a well behaved direct radiating driver? If it does not provide practical benefits in terms of sound perception – then who cares it is more advanced topology in terms of pressure release (by saying pressure release I do not mean TONE). Most of the acoustic instruments in reality have strong boundary effect of their tonal pressure. Have you ever heard somebody complaining by the fact the violin does not release its pressure gradually in the surrounding environment?! :-) It simply does not disturb the brain in the same way as you are absolutely not disturbed by the sharp boundary effect of pressure release through 2 sq inch of area when somebody talks in front of you. And all these facts are of fundamental importance.

 Romy the Cat wrote:
Horns is completely different animal and you need to educate your with upperbass horn sound.

I have to confess I have quite limited experience in terms of upper bass horns. I have listened the big Cessaro system and I have to point the guys who made this acoustic system have no relationship with reality. May be they have been teleportated from another galaxy. I clearly recognized the upper bass energy is coming from below the midrange horn and it is totally in opposite to the way how the acoustic instruments sound in reality. The energy of the different frequency ranges emanates from different areas in space and the brain (well, at least my brain) could not be fooled - very disturbing artifact. Their UB horn not only needs another supporting UB horn placed over the midrange driver – it literally begs for it! Only then they can eventually get the effect of balanced (coherent) energy distribution across the entire sound range. Not to mention the fact that a good single 15” direct radiator has twice the sound scale of this big (and space eating) UB horn. And it is not necessary for somebody to agree with me – I’m OK with that.

 Romy the Cat wrote:
So, as the person who do deal with horns I do admit that with multiplication of horns per channel you will have benefits but the benefits will be less significant than those that you observe with direct radiators, which bring the whole idea to very questionable viability or even need (with horns).

With all my respect to you, I think the only way to understand the effect of adding more UB sources which are symmetrically arranged around your midrange channel (at least one above it) is to hear such a configuration with your own ears. If you have no experience with it, you can continue to question its validity, but your presumptions will remain only theoretical. I do not defend MY (or any) topology (because I don’t  need to), simply because I really do not care how other people build their acoustic systems – I only use what I learned from my psychoacoustic experiments and I’m trying to find practical realization of these findings. I also learn a lot from other people's mistakes and by listening to mistaken concepts (realisations of these concepts) I gain a lot of experience. The fact that there are 6688 people who think my point of view is wrong, does not change in any way the sound I get in practice (and more importantly - it does not improve their sound too!)…

Best regards,
Haralanov  

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