Quote:
Originally Posted by Bobsound
...The multi cell arrangement was supposed, I believe, to overcome the 'focussing' of the sound into a narrow beam at high frequencies...
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Ah, you've reminded me of the other iffy assumption in the classical maths (Webster horn equation?) - that the waves remain in contact with the horn walls. Yes, I guess the diaphragm directivity takes over at high frequency - in fact that's what phase plugs are all about, now I come to think of it.
Funny how quick you can forget things
