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Old 28th December 2011, 07:36 PM   #911
jzagaja is offline jzagaja  Poland
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Solid surface SEOS prototype with integrated mount and gelcoat. Outer surface will be painted later I suppose because it helps remove air.
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Last edited by jzagaja; 28th December 2011 at 07:41 PM.
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Old 28th December 2011, 10:46 PM   #912
jzagaja is offline jzagaja  Poland
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Fiberglass horns and French polished exotic wood is a way to go. Below picture shows my a monitor cabinet made of solid wood cut 45 degrees, joints (dark smudges) filled with nitro lacquer with wood meal.
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Old 2nd January 2012, 07:23 PM   #913
jzagaja is offline jzagaja  Poland
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French polished cabinet view. Made with simple home tools. AMT35 + nanocarbon woofer.
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Old 2nd January 2012, 07:57 PM   #914
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A couple of measurements.
Gorgeous results on the LCY ribbon!
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Old 2nd January 2012, 08:33 PM   #915
jzagaja is offline jzagaja  Poland
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LCY 618 = LCY K100

http://www.madisound.com/pdf/printcatalog/LCY.pdf
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Old 2nd January 2012, 09:01 PM   #916
Scaper is offline Scaper  United States
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Looking great Jzagaja.

I mentioned to you earlier that myself and another guy were working on some compression drivers that performed as good as the DE250.

Member Bwaslo and I tested them a couple days ago and they did very good and pricing will be REALLY nice.

Here's the graph comparisons below. One of the production ready models is on the top, the DE250 is in the middle, and the other production ready model is on the bottom.

The one on the top matches the DE250 the best. It actually extends a little higher too. I think it was about $8 more than the one on the bottom.

How'd we do???



Click the image to open in full size.
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Old 2nd January 2012, 11:01 PM   #917
gedlee is offline gedlee  United States
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I mentioned to you earlier that myself and another guy were working on some compression drivers that performed as good as the DE250.
Beating the DE250 on price is really a no-brainer as a scan of

Compression Driver-Compression Driver Manufacturers, Suppliers and Exporters on Alibaba.com

will show. Its the reliability and support that is the bigger factor. I have contacts in China who will sell me DE250 knock-offs for about $20.
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Old 3rd January 2012, 02:42 AM   #918
Scaper is offline Scaper  United States
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Beating the DE250 on price is really a no-brainer as a scan of

Compression Driver-Compression Driver Manufacturers, Suppliers and Exporters on Alibaba.com

will show. Its the reliability and support that is the bigger factor. I have contacts in China who will sell me DE250 knock-offs for about $20.


Beating the DE250 on price and performance isn't necessarily a no brainer. Like you said, I'd be worried about support for many things.



Luckily, the ones I showed above were actually worked on and tested here, and I'm 98% sure the nicer ones will be assembled here in Ohio using parts from a couple different manufactures. We contacted 3 (sort of 4) different suppliers for parts, full samples, etc. We worked with some things from Europe as well. The guy that came up with the best model had much more input than I did. I know he went through a lot of different part configurations to get it right. And of course his tested better than mine. (his is the one on the top).

Reason being, his knowledge about their workings is much greater than mine. He's been well known in the audio business for many many years so he knew what was needed, what modifications to make, etc. We were pretty happy with the results.
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Last edited by Scaper; 3rd January 2012 at 03:10 AM.
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Old 3rd January 2012, 06:08 AM   #919
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Gorgeous results on the LCY ribbon!
How so?

The directivity variation w/freq is nice and smooth, but decreasing, i.e. not CD.
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Old 3rd January 2012, 05:40 PM   #920
Pallas is offline Pallas  Pakistan
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How so?

The directivity variation w/freq is nice and smooth, but decreasing, i.e. not CD.
Not to speak for John, but that those horns seem to be shaped to beam. So the driver's doing what it's technically supposed to do on that horn.

That does have me wondering what such a driver would look like on a OS waveguide, though I suspect it would ultimately be too fragile and not go low enough to be useful.
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