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In the Forum: Horn-Loaded Speakers
In the Thread: Stop having a fear of horn vignetteing
Post Subject: Eclipsing the feathery edgePosted by jessie.dazzle on: 12/19/2007
Nice post Romy, and super illustration (you're getting really good with that mouse!).

To further strengthen your argument, it bears mentioning that you are illustrating the condition at its worst point; that is to say, at the centerline when viewed from the side (assuming both horns are round).

If you were to illustrate the same condition when "viewed" from the listening position (looking at the horns from end view), we would see that with round horns, the potential for reflected sound is even less than what one might immediately conclude from your illustration.

It would follow that any resulting negative effects would be largely limited to the 6 o'clock zone of the sound pressure field (not to be confused with sound waves) emitted by the smaller horn. In other words, this field which presumably carries a somewhat diffuse and circular section, is only being slightly eclipsed at the bottom of its nebulous perimeter... Further more, it is being eclipsed by what? By the uppermost part of an object that also has a circular section.

I often try to imagine a means of seeing sound (LSD?) both inside and as it exits a horn... or a means of simulating the sound pressure field of a horn in a way that it might be observed visually.

Once the waf gets home I will try sealing off the house while smoking an entire box of Cohibas, then light the place via a lamp placed in the throat of a white horn.


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