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Old 3rd October 2014, 05:36 AM   #1
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Default diamond drivers

has anyone tried?/ to coat a driver with diamond dust?
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Old 3rd October 2014, 07:21 AM   #2
Sonce is offline Sonce  Macedonia
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Do not crush your wife's wedding ring yet, it is not a dust, it is a thin coat of amorphous diamond film. Impossible for DIY, I beleive.
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Old 3rd October 2014, 09:51 AM   #3
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Is it something like the $2,900.00 Accutons D20-6-31 Pure Diamond you are talking about?
Never tried!
Diamond Booklet by Dr. Christoph Wild, Dr. Eckhard Wörner pdf
Diamond loudspeaker cones for high-end audio components by E.Woerner, C.Wild, W.Mueller-Sebert, P.Koidl and A.Bankewitz pdf
Success stories on advanced ceramics by Fraunhofer AdvanCer - Adrian Bankewitz pdf

Another type of product that seems logical is the composite Focal Polyglass paper-fiberglass cone drivers. Look for the letter "V" as in Focal 6V 4211 (Polyglass-Membrane). link1 (lautsprechershop.de), link2 (zalytron FACTORY LIQUIDATION)
One new nanotechnology deserving some testing in the driver DIY world is flexible Liquid Glass with real glass properties that was never tried or measured before, in this forum, that I know.
Liquid Glass | CCM GmbH Germany
Liquid Glass
The New Generation of Liquid Glass Coatings - Made in Germany - be fascinated! - YouTube
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Old 3rd October 2014, 10:33 AM   #4
SY is offline SY  United States
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Can't remember the name of the company, but I saw/heard some speakers with diamond cones (CVD process?) at a recent show. They were very proud of the fact that the drivers cost $10,000 each.

I don't know what specific factor caused them to sound so awful.
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Old 3rd October 2014, 05:24 PM   #5
BYRTT is online now BYRTT  Denmark
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What a story SY thanks and exactly a product world needs.

Being a modern processed product then add they probably build in planned obsolescence to guarantee consumer demand, around a three years period it will be revealed and need new diamonds .
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Old 3rd October 2014, 05:28 PM   #6
jmsent is offline jmsent  United States
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Quote:
Originally Posted by zipperdog View Post
has anyone tried?/ to coat a driver with diamond dust?
We did this when I was working for SEAS. It did absolutely nothing other than look cool.
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Old 3rd October 2014, 06:30 PM   #7
chrisb is offline chrisb  Canada
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B&W has been doing something with diamond on their tweeters for a few years now. Having heard them in a dealer's demo room and finding the total system not quite my cuppa tea, I didn't really pursue the "how's that made?" thread of research.
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Old 3rd October 2014, 06:34 PM   #8
jmsent is offline jmsent  United States
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The B&W's and the Accutons are pure diamond domes. That's very different from coating a membrane with "diamond dust"
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Old 3rd October 2014, 06:45 PM   #9
SY is offline SY  United States
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Quote:
Originally Posted by jmsent View Post
The B&W's and the Accutons are pure diamond domes. That's very different from coating a membrane with "diamond dust"
Yeah, the ones I heard had both cones and domes made entirely from diamond, according to their sales guy (maybe designer, too?). I'd love to have a day or two to do some comprehensive measurements and trace down why they were so insanely bright (think bleeding ear-sockets), but I suspect the company that sells them wouldn't be thrilled loaning out $100k worth of speakers to me.
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Old 3rd October 2014, 09:47 PM   #10
Greg B is offline Greg B  United States
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I can't imagine any logical reason to coat a driver with diamond dust, other than to increase it's perceived value for marketing reasons.

If it was possible to grow an industrial diamond as big as a driver diaphragm, that would be interesting, but it's not.

Perhaps I am missing something, but I just can't see any sonic benefit whatsoever.
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