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Old 12th March 2012, 04:37 PM   #401
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Hi Mark,

I do notice a big increase in sound stage and dynamic from increasing the active diameter from 70 to 80 cm. As far as efficiency, it's not that significantly better.

I'm very interested in your horn loaded ESL. Could you post a link to that, please?

Wachara C.
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Old 12th March 2012, 05:02 PM   #402
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Yes,I too would be very interested in hearing of your results of a horn loaded Mid/tweet ESL panel.
I truly believe that this could work very well in contrary to others popular belief's.

Cheers !!

jer
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Old 12th March 2012, 05:05 PM   #403
Mark Kravchenko
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It's a planar magnetic driver.

ESL is a bit different.
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Old 12th March 2012, 05:15 PM   #404
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Oh,Okay !!! he,he,he

Still would like to hear of your results.
Later this year I will try it though after I get my new little panels built.


Wachara,
I can't believe that it has been a whole year now since I had started my Esl Headphone's and have yet to finish them!!

I think that I will use your method of wood to support the frames now that I have finally gotten my stator coating down pat for the wire mesh stator method.

jer
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Old 12th March 2012, 05:23 PM   #405
Mark Kravchenko
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ESL has been horn loaded. But true horn loading is not to friendly to an ESL. The one design I will try it the ESL compression driver mentioned. That looks possible.
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Old 12th March 2012, 05:34 PM   #406
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I had once thought of using a pair of gold plated CDR's to make a compression type of ESL driver with the exit out of the center spindle holes.

I was thinking of this technique to boost the lower end for a headphone driver as well.
But I have yet to give it a try.

jer
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Old 19th May 2012, 03:49 PM   #407
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Here is another pair that is almost done:

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

The driver has the same size as the famous Orpheus HE90. They sound really nice.
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Old 19th May 2012, 04:55 PM   #408
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Quote:
Originally Posted by Nixon View Post
Read this and the similar thread over at DIY Audio and I think I might have to have a crack at a set. Spent the evening on Sketchup and have began designing the stator and spacer.
Click the image to open in full size.
Click the image to open in full size.


Ever so slightly ripped off from one of chinsettawong's designs. Do they seem ok so far? They're both 90mm in diameter so you have an idea of scale.
Hi - sounds interesting that you are using sketchup for this. Any chance you can post some pictures of your drawings? And also which file format do you output from Sketchup? I'm interested in drawing headphones myself, however, probably would need an .stl output format - for use with a 3D printer.

Greetings,

Jesper
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Old 21st May 2012, 07:00 PM   #409
Mark Kravchenko
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Willing to make a set ? You are very good at this and me trying to reproduce it would be quite an effort.

I have amp designs on file already. Would be a most interesting adventure.
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Old 23rd May 2012, 05:47 PM   #410
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Hi again,

Just out of curiosity - any of you made a single-ended headphone, i.e. with only one stator (could be with two stators but only one of them connected to the output signal)? I know that theoretically it's less optimal (due to varying electric fields when the membrane moves, I understand) but any of you tried it in practice? It would allow for a single-ended amp ....

Best regards,

Jesper
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