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In the Forum: Playback Listening
In the Thread: Basic guide to advanced audio
Post Subject: Very specific problems?Posted by Romy the Cat on: 8/1/2011
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 haralanov wrote:
I think you wanted to say reflection surface, not radiation surface, right? Radiation surface is the surface that is directly attached to the vibration creating element (the voice coil). So the radiation surface of the horns using compression drivers is equal to the surface of the dome of that compression driver. All the rest is reflecting surface.
It is incorrect. There is no reflection surfaces.  The actual radiation surface of compression driver might be considered the size of the throat but the factual radiation surface is the whole perimeter of horn. In case of multi-channel installation the combine surface of the drivers as arrays act at radiation surface. Do not forger that in case  of your large wide-band driver the geometry of the driver act as restrictive cancelation devise, setting up directivity of radiation. In case of horn the directivity is also restricted but not by side cancelations as the throat of the horn is negligibly small for each location at horn mouth. Of cause the mouth of the horn is a radiation surface. If you measure sender and sides of a MF horn then you will have a few dB differences but you will have 20-30dB different outside of the horn. If you have 40Hz midbass horn with mouth of 3-4 meters then do you feel that 40hz wave get radiated from mouth and do not cover the whole surface of the horns mouth? Of cause in case of horns mouths are the active transducers…
 haralanov wrote:
I’m not looking for a justification of alternation of musical messages and the affect to original meaning of the musical messages coming from horn topology – I only mentioned that all of the horns I have ever heard do affect the musical messages, making them too horny every single time. I will be glad somebody to demonstrate me proper horn implementation (because everybody knows most of the horn implementations sound like crap) that is free from those artifacts.

What does it mean “horny”? do you mean that they had honk? If so then they were very specific playback with very specific problems and they do not define what horn-lording is able to accomplish generally.

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