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Old 14th September 2011, 06:19 AM   #761
jzagaja is offline jzagaja  Poland
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I haven't measured yet.
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Old 18th September 2011, 02:08 PM   #762
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K-horn (spherical profile, Klang Film KL51) directivity.
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Old 18th September 2011, 04:18 PM   #763
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Typical "Chinese" screw on driver cross section view.
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Old 18th September 2011, 05:25 PM   #764
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Modification proposal.
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Old 19th September 2011, 05:29 AM   #765
Pallas is offline Pallas  Pakistan
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Interesting. That looks a bit like the "tulip" waveguide in Tannoy's modern Dual Concentrics.
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Old 24th September 2011, 09:05 PM   #766
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Phase plug change is easy but it will destroy magnetic circuit.
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Old 24th September 2011, 10:49 PM   #767
gedlee is online now gedlee  United States
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Make the outer ring of your modified phase plug part of the magnetic circuit and it will be fine. Its no more difficult to cut or form a curve on that survface than a straight line.

You need to plot the normal flux along the gap for both designs. Its only the normal flux that contributes to the axial force. The tangential flux drives ring modes. This is very easy to do in that software.

Last edited by gedlee; 24th September 2011 at 10:54 PM.
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Old 25th September 2011, 07:22 PM   #768
jzagaja is offline jzagaja  Poland
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I wanted turn myself that's why kept it straight :-) Normal flux is surprisingly quite similar in straight version (0.2T). Curved below.
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Last edited by jzagaja; 25th September 2011 at 07:37 PM.
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Old 26th September 2011, 10:53 AM   #769
gedlee is online now gedlee  United States
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There is something wrong with those flux plots. They cannot be correct. Perhaps the grid is too coarse or something. You need a line placed where the VC would be, running along the voice coil, that extends past the voice coil on both ends. There should be at least ten elements along this line. The flux should fall almost to zero at each end of the plot. can you post the model?

The flux in the curved case looks pertty much the same as the original. You claimed that the changes messed up the magnetics which is not the case at all, if done correctly.

Does this phase plug correspond to my patent?

Last edited by gedlee; 26th September 2011 at 10:56 AM.
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Old 26th September 2011, 11:23 AM   #770
jzagaja is offline jzagaja  Poland
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Quote:
Originally Posted by gedlee View Post
Does this phase plug correspond to my patent?
Yes it does. I've created AxiDriver data for this plug.
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