Does anyone know this ribbon driver?? I need some data on it. please!!! - diyAudio
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Old 21st July 2003, 01:46 PM   #1
sonnya is offline sonnya  Denmark
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Smile Does anyone know this ribbon driver?? I need some data on it. please!!!

I have this two of these fine ribbon tweeters, but no data on them....

Can anyone help?
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Old 21st July 2003, 01:48 PM   #2
sonnya is offline sonnya  Denmark
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another pic.
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Old 21st July 2003, 01:55 PM   #3
moamps is offline moamps  Croatia
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Heil A.M.T. maybe
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Old 21st July 2003, 02:24 PM   #4
Gregm is offline Gregm  Europe
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Default Definitely

looks like a Heil AMT.
I remember seeing these in a German diy e-shop; you could hopefully find info there...
Now if I could only remember the shop

(maybe a search with heil a.m.t. + .de would help)
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Old 21st July 2003, 03:16 PM   #5
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They certainly appear to be Heil AMT's, (Air Motion Transformer), and they are considered among the best tweeters/upper midranges in the world. I auditioned them once in a stereo shop in the seventies-it was hard to tell because I didn't think the woofer in the ESS unit was all that great.

Do a search for Heil and you will see that this has been discussed often. There is even a member named AMT-freak!

Here a couple of discussions on the Heil:

Air Motion Transformers (Heil's) and New Diaphragms

The Diaphragm Goddess from Heil

Ess driver?
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Old 21st July 2003, 04:30 PM   #6
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Lucky you, those are AMT 1, selling at about 1000 per pair. The European distributor is Audio Int'l in Frankfurt, but I am not sure if they have a web site. www.hifisound.de carry their products also.

Greetings,

Eric
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Old 21st July 2003, 06:15 PM   #7
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Quote:
Originally posted by capslock
Lucky you, those are AMT 1, selling at about 1000 per pair. The European distributor is Audio Int'l in Frankfurt, but I am not sure if they have a web site. www.hifisound.de carry their products also.
Someone's making some money... i have a quote for $150 USD each as spares.

These are indeed fine tweeters. ChrisB and i are working on a design using these for a client (pictures are from a developmental stage -- i hope to get pics of finished speaker this week) and previously did a 3-way AMT-1 conversion.

dave
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File Type: jpg heil-fostex-tiled.jpg (45.0 KB, 404 views)
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Old 21st July 2003, 06:18 PM   #8
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With the tendency of the surrounds on AMT1 woofs & PRs to disintegrate you will occasionally find an entire speaker at a steal. A friend in dmonton scored some AMT1s with these Ts for $10 CAD.

dave
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Old 21st July 2003, 06:19 PM   #9
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The 3-ways.

dave
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Old 21st July 2003, 06:22 PM   #10
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This is the FR & impedance form the tweeter in the 3-ways

dave
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