High Efficiency Speaker Asylum

Most of that made sense :-)

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One part I stumbled on:

"So the asymmetry is present in the horn expansion in its axial dimension, and this is analogous somewhat to the asymmetrical baffle in the direct radiator example above"

With a baffle, when I refer to symmetry, I mean - if you glue a string to the centre of the driver, you can move the free end of the string in any direction from the driver, and the transition to free air will always happen at the same distance along that piece of string.

With a horn, I mean the same thing. You lay the string along the left wall of the horn, and the distance from throat to free air = X. You lay the string along the bottom wall of the horn, and the distance from throat to free air = X.

Asymmetry, as I tried to describe it, is achieved by making the mouth non-round, so X would be longer in some directions than others.

Can you please explain again what you mean by asymmetry?



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