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Old 26th April 2009, 08:07 AM   #41
SM7UYJ is offline SM7UYJ  Sweden
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Hi Wachara,

Perhaps I'll give a pair off ES-headphones a try later on!
I have had the luck of salvaging an old Roland PNC from the scrap yard - now I just have to learn how to program it!

Realy nice work on you phones and amp!

/R
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Old 28th April 2009, 04:02 PM   #42
a.wayne is offline a.wayne  United States
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Hello Wachara ,

Excellent effort , very impressive to say the least .........

Regards ,

A.Wayne
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Old 10th May 2009, 04:49 PM   #43
vaughn is offline vaughn  United States
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I've looked at that article a few times on Headwize and your version looks very
professional.

A note on the bass response...

It looks as if you are using some kind of felt to cover your ear pads. I would strongly suggest
using leather or pleather (fake leather) as it creates a better seal with your head. I have experimented quite a bit with headphones(dynamic, orthodynamic, electrostatic) and switching earpad materials has a profound impact on the sound. Stax uses leather on all of their ear pads
and I suspect it is for this reason.

Good luck!
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Old 11th May 2009, 03:00 AM   #44
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Quote:
Originally posted by vaughn
I've looked at that article a few times on Headwize and your version looks very
professional.

A note on the bass response...

It looks as if you are using some kind of felt to cover your ear pads. I would strongly suggest
using leather or pleather (fake leather) as it creates a better seal with your head. I have experimented quite a bit with headphones(dynamic, orthodynamic, electrostatic) and switching earpad materials has a profound impact on the sound. Stax uses leather on all of their ear pads
and I suspect it is for this reason.

Good luck!
Dear Vaughn,

I have nothing to complain about the bass response. I love it. It is far better than other headphones that I have.

About the ear pads, I use insulation material which I find from the left over around my house. It is like a plastic sponge. Although it doesn't feel as comfortable as the real sponge, I find it to be acceptable. I cover it with plain cloth. Yes, I think leather should be good for this application. However, it is quite difficult for me to source for it.

I really think that the diaphragm material makes a lot of difference. I have bought a small amount of 1.5 microns and 0.9 microns mylar, and they should arrive very soon. I will try them out and let you know how much difference they make.

Wachara C.
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Old 11th May 2009, 03:19 PM   #45
Phil47 is offline Phil47  France
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Hi

Very good job !

20 years ago I made an ES heaphone for the french magazine "L'Audiophile".

I use 700 volts polarizing voltage to the diaphragm and spacing between diaphragm and electrode is 0.7 mm gives 10 kV/cm electric field.

Here's are some pictures:

Philippe
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Old 11th May 2009, 03:36 PM   #46
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Hi Phillips,

Can you check? I can't see your pictures.

My spacer thickness is 1 mm. The bias voltage is selectable between 600V and 900V. For most of the time, 600V is sufficient.

Wachara C.
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Old 11th May 2009, 05:14 PM   #47
vaughn is offline vaughn  United States
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Yes, I am curious as well to see these pictures!

Between this and the developing DIY Electrostatic energizer(tube) developing on Head-Fi
I am becoming inspired to build my own set from the ground up.

I loved my Stax set but I couldn't ever justify owning a $1200 pair of headphones and ended up
selling them.
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Old 11th May 2009, 06:42 PM   #48
Phil47 is offline Phil47  France
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upload problem ?

Pictures of my ES headphone on imageshack :

Click the image to open in full size.

Click the image to open in full size.
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Old 11th May 2009, 06:42 PM   #49
Phil47 is offline Phil47  France
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More pictures :

My electrostatic headphone construction :

Click the image to open in full size.

The two "Cale d'espacement" are gaskets which give spacing between the diaphragm and the two electrodes.


Before mounting :
Click the image to open in full size.

Diaphragm is on the left part. Connection to the copper side of electrode use a sort of metallized hole.

Philippe
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Old 12th May 2009, 06:42 AM   #50
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Hi Phillipe,

Wow, that's very impressive. Do you use the same material as your diaphragm on your outer protection? What material and what thickness do you use for the diaphragm?

Ok, the attached photo shows my version of stators and spacers.
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