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Old 23rd May 2013, 01:59 AM   #1
diyAudio Member
 
Join Date: Apr 2012
Location: Hackney
Talking DIY isodynamic headphones?

Anyone had a go at building / designing their own?

Found this:
DIY HiFi Orthodynamic Portable Headphones (aka Ribbon Driver Headphones)

..and she proposes the use of these:
2x Sawafuji Ribbon Tweeter , 39 mm , 8 Ohm , perfekt für eine Line Array | eBay

For you guys who know these things...does the above sound like organised madness...and what are your thoughts on finding speaker elements for something like this?

I had to ask

Cheers
//O.
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Old 3rd June 2014, 04:04 PM   #2
oshifis is offline oshifis  Hungary
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Join Date: Mar 2004
Location: Budapest, Hungary
A one-year old thread...

I am just building a pair of isodynamic headphones using these. My drivers are AKAI 4IT-SM3G, but they are identical to Sawafuji SZ-2T. They are 8 ohms and have closed back magnet. I bought four of them, disassembled, and used the perforated magnets at both sides, so I made two from four. The shell is a hearing protector. They sound great. I will publish pictures.
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Old 4th June 2014, 09:16 AM   #3
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Join Date: Apr 2012
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Hey oshifis,

I'd love to see pictures!

I'm still looking for a good source of planar magnetic drivers...

..while looking at vintage stuff, I'd like to have a more stable source, so I can build a series and make for friends.

Please do send images of the drivers disassembled?? And your thoughts on the results??

Exciting!

Cheers
//O.
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Old 4th June 2014, 01:05 PM   #4
oshifis is offline oshifis  Hungary
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Join Date: Mar 2004
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Hi Odd,

I assembled and listened to the headphones. The trebles are a bit accented, I would say it is best for rock music . This is just an experiment how they sound in a closed shell. The driver is widely available in my country for about 1 EUR. Here are some links that might be interesting:

ÁRWILL ELEKTRONIC elektronikai alkatrész kis- és nagykereskedés - 4IT-SM3G, magassugárzó
DIY-HIFI-Forum - Einzelnen Beitrag anzeigen - Entwicklungsbericht Mobb Deep - Eine etwas andere 3-Wege-Box
1 Paar Bändchenhochtöner Sawafuji SZ-2T ! TOP !!!!!!!!! | eBay
ApexJr Ribbon Tweeter

Pictures will come, just need some time.

Last edited by oshifis; 4th June 2014 at 01:22 PM. Reason: One more URL added
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Old 6th June 2014, 10:02 AM   #5
oshifis is offline oshifis  Hungary
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Join Date: Mar 2004
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Default Pictures

As promised...
Attached Images
File Type: jpg PICT0001.jpg (228.2 KB, 218 views)
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File Type: jpg PICT0012.JPG (382.4 KB, 60 views)
File Type: jpg PICT0015.JPG (389.0 KB, 50 views)
File Type: jpg PICT0016.JPG (485.4 KB, 47 views)
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Old 11th June 2014, 09:32 PM   #6
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Why not make your own isodynamic drivers?
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Old 23rd November 2014, 09:12 PM   #7
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Join Date: Nov 2014
And I recommend you this option Handmade Monitoring Isodynamic Planar Magnetic Headphones 7 Ohms Kiev Ukraine | eBay After this headphones evaluation, I've ended up with idea, that in their price range, it's almost doesn't have competitors.

Good resolution, usual for orthodynamic models, here combined with good sensitivity, allowing to use this headphones with non-HiEnd sources. But on good DAC, this headphones reveal themselves even better.

I've liked them very much with my usual "entry-level" DAC/amp Audinst HUD-MX2

Bass is good, it's very well controlled, he's punchy, but have enough resolution for most genres.

Mids are nice, they does have all emotions and necessary details. They can be somewhat harsh, but in this price range it's really nit-picking.

Highs are detailed and go up really high. They aren't fatiguing and not sibilant.
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Old 25th November 2014, 01:42 PM   #8
oshifis is offline oshifis  Hungary
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I don't think a 7 ohms device is suitable for iPhone as the seller stated... That is the weak point of my headphones, too.
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Old 27th November 2014, 11:07 AM   #9
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Quote:
Originally Posted by oshifis View Post
я не думаю, что 7-ом устройство подходит для iPhone, как продавец заявил, что..., что является слабым местом мои наушники тоже.
Write your mail,you should see isodynamic headphones at 16 Ohms.
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