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Old 5th April 2013, 05:29 AM   #241
Thomas Spilcker is offline Thomas Spilcker  Denmark
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It' s PERFEKT !
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Old 5th April 2013, 03:56 PM   #242
zmyrna is online now zmyrna  United Kingdom
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Location: London
Bandsei,
Thank you for posting your project here.
I have been using an Oskar Heil Syrinx for nearing 10 years now.
And lately, I have been experimenting with BG neo drivers on full open baffle projects.
I have already made a dipole waveguide for a neo3, very similar to yours in design and materials.
My next project is a similar WG for a neo8s (drivers in the post).
Your DIY AMT has similar height to a neo8? What is your view on your driver's vertical dispersion and effects on listening experience?
I am hoping to be able to use the neo8s without any tweeter or supertweeter on top.
To increase the vertical dispersion, I will experiment with felt and foam covering 1/3 upper and 1/3 lower parts of the radiating surface of neo8. Just like Raal does with their taller ribbons.
You seem to have much better skill, knowledge and equipment to test this idea.
Would you give it a go?
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Old 9th April 2013, 12:48 PM   #243
båndsei is offline båndsei  Denmark
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zmyrna
Sorry for my late answer.
My AMT´s are 170x40mm,active app.150x32mm.
Vertical dispersion is like line source,not good.I plan to make another model with the AMT´s horisontal.
A shorter diaphragm acts maybe more like a point source.
I will be eksperimenting with vertical dispertion.

Bernt
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Old 10th April 2013, 07:49 AM   #244
SEdwards is offline SEdwards
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Have you considered just exposing less of the diaphragm to a horn?

It might be good to have the glued ends where displacement cannot be as linear removed from the output. Maybe you'll still have enough output.
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Old 10th April 2013, 04:45 PM   #245
båndsei is offline båndsei  Denmark
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It might work,like a shorter AMTwould.
But i like my own idea,and have not seen this idea used.Could be fun.
I have made someting similar:
[IMG]Click the image to open in full size.[/IMG]
This one is with 5 ribbon and vertical.
The new idea is horisontal with 3 AMT´s.

Bernt
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Old 14th April 2013, 04:11 PM   #246
båndsei is offline båndsei  Denmark
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I have anounced that I would show how to make my frames.
[IMG]Click the image to open in full size.[/IMG]
[IMG]Click the image to open in full size.[/IMG]
[URL="[URL=http://img585.imageshack.us/i/80mmrammemembran007.jpg/][IMG]http://img585.imageshack.us/img585/8206/80mmrammemembran007.jpg
[IMG]Click the image to open in full size.[/IMG]


I use hard wood and normal glue for wood.

Bernt

Last edited by båndsei; 14th April 2013 at 04:19 PM.
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Old 14th April 2013, 04:28 PM   #247
båndsei is offline båndsei  Denmark
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This is the curved model:
[IMG]Click the image to open in full size.[/IMG]
I only have 2 diaphragms yet.
More later

Bernt
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Old 15th April 2013, 05:55 PM   #248
Thomas Spilcker is offline Thomas Spilcker  Denmark
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Have you seen that ? It shut be a old german produkt.
Attached Images
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File Type: jpg etf38_1000.jpg (107.1 KB, 228 views)
File Type: jpg etf40_1000.jpg (116.0 KB, 220 views)
File Type: jpg ff09_0084.jpg (97.2 KB, 198 views)
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Old 15th April 2013, 06:58 PM   #249
båndsei is offline båndsei  Denmark
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Hmmmm.
Never seen this before.Is it a ribbon with a kind of horn?
Not sure it is manufactored to be a speaker.May be a mix of stuff.

Bernt
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Old 15th April 2013, 07:20 PM   #250
Thomas Spilcker is offline Thomas Spilcker  Denmark
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www.igdh.eu ( Interessegemeinschaft DIY.) Frickelfest 2009.

Last edited by Thomas Spilcker; 15th April 2013 at 07:36 PM.
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