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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: Re: the on-axis hole posted by Duke on February 1, 2007 at 13:06:34:
Duke,As I told you I don't see myself such a hole on my measurements some of them can be seen at:
http://www.musique-concrete.com/mesures/321direct.gif
due to the precision of the measurement, if this axial hole
exists it is far less than 0.5dB with my horn.I don't want to criticize John Sheerin simulations, there are very enlightning about differences between horn shapes. A limitation to those simulations is that they are only performed in 2D not 3 D (someone will surely say this has a minor influence in the case of an axial horn...)
You know that the profile of horns calculated with my method is curving back at the mouth. Diffraction is therefore reduced. This explains both the very pure wave shape on impulse reponse and the very smooth electric impedance curve.
Most waveguides are cut too sharply at the mouth and for sure diffraction will occur with more evidence.
Best regards from Paris
Jean-Michel Le Cléac'h
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Follow Ups
- Re: the on-axis hole - Jmmlc 09:10:10 02/02/07 (0)
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