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Author Topic: Chinsettawong's DIY electrostatic headphones  (Read 3797 times)

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Marvey

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Chinsettawong's DIY electrostatic headphones
« on: November 05, 2012, 04:32:18 AM »
Some quick measurements.

As I've said, they remind me a bit of the SR-Omegas. The most objectionable part is a slight hardness at 6k reminiscent of the HD800. They are not bright though. In fact, they sound rolled to me a little bit and not as airy - a minor quibble. Do not take this as missing treble. It's just that treble air is just slightly depressed - but still evident. Bass impact is similar to SR-Omegas, that is they hit a bit light.
« Last Edit: November 05, 2012, 05:18:12 AM by purrin »
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Marvey

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #1 on: November 05, 2012, 05:15:22 AM »
Harmonic Distortion

Very low D2 (2nd order). D3, D4, and D5 are kind of high, though really no high enough to affect THD which in this case will pretty much follow the D2 line. It is very clean sounding with a very black background.

« Last Edit: November 05, 2012, 05:21:38 AM by purrin »
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Marvey

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #2 on: November 05, 2012, 05:18:37 AM »
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Anaxilus.

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #3 on: November 05, 2012, 05:22:24 AM »
We don't have distortion for the Omegas do we?  I felt they were a bit cleaner and sweeter from my recollection.
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Marvey

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #4 on: November 05, 2012, 05:34:01 AM »
Not having "present" bass usually helps in things sounding cleaner.
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Marvey

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #5 on: November 05, 2012, 05:49:23 AM »
Arnaud:

Do you think the circular driver design may lead to the resonance at 5-6k?

Also, do you think an oval design may lead to several smaller resonances (see Jade and HE90 measurements.)
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Deep Funk

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #6 on: November 05, 2012, 11:32:38 AM »
Quote from: purrin on November 05, 2012, 04:32:18 AM
Some quick measurements.

As I've said, they remind me a bit of the SR-Omegas. The most objectionable part is a slight hardness at 6k reminiscent of the HD800. They are not bright though. In fact, they sound rolled to me a little bit and not as airy - a minor quibble. Do not take this as missing treble. It's just that treble air is just slightly depressed - but still evident. Bass impact is similar to SR-Omegas, that is they hit a bit light.

Wow! DIY?
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roBernd

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #7 on: November 05, 2012, 11:51:25 AM »
I am especially amazed by the driver-matching (sounds a bit wrong when there areno spare drivers involved)
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omegakitty

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #8 on: November 05, 2012, 04:54:48 PM »
Quote from: roBernd on November 05, 2012, 11:51:25 AM
I am especially amazed by the driver-matching (sounds a bit wrong when there areno spare drivers involved)

The matching should be down to the tensioning and coating of the diaphragm. From looking at his method he has a well thought out tensioning rig.

purrin are those the ones that have a 0.5 mm diaphragm - stator gap with 600v bias?
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ujamerstand

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Re: Chinsettawong's DIY electrostatic headphones
« Reply #9 on: November 05, 2012, 05:59:36 PM »
Quote from: purrin on November 05, 2012, 05:49:23 AM
Arnaud:

Do you think the circular driver design may lead to the resonance at 5-6k?

Also, do you think an oval design may lead to several smaller resonances (see Jade and HE90 measurements.)


They were talking about using an egg shaped diaphragm to break up the resonances of the diaphragm in the ortho thread. Arnaud, if you have the time, could you do some simulations on diaphragms with convoluted edge?


I was imagining something like this:
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