The 6moons just announced that that The Orgue Company made 6.5" driver after the similar Mitsubishi driver:

"The original Diatone P-610 was made by Mitsubishi beginning in 1947 until 1992. The Diatone P-610 has sold widely in the world for 50 years and been popularly used by millions of people. The Diatone P-610 we currently produce is made by Orgue on the same production line that Mitsubishi used while we have improved frequency response and power handling." Orgue also makes the Mini and Reference monitors employing this driver, with the latter claiming a response of 38Hz-20kHz at 98dB.”

I deal neither with Orgue driver nor with Mitsubishi drivers but my hat off for any company that tries to use leather suspension. Lather is extremely interesting material for suspension and if the paper/leather transition is done properly then it serves very beneficially, practically free from any known suspension colorations.

Thanks you, Tuga. I care less about the Diatone drivers and was attracted only by the leather suspension. Anyhow, among the links that you posted there is one that actually made me to navigate further and eventually to read:

http://www.audiotekne.com/en/policy_index.html

Surely I disagree with many moments of the writing but still it was better presentation of company philosophy then uselessly…

The leather suspension IS a spectacular material, I agree. I would say that it is a spectacular material for relatively long throw drivers, the drivers that work in open baffles as so on.

There is a community of people who strong supporters of leather suspension and they take good drivers and change the suspension to leather. I think the Russian-German Oleg Rulit does it as few others; the leather suspension always was very popular in Russia.

I ma not using leather suspension as I have no topological need in it but if I were in a “wide rage drivers” domain then I would play with leather.

However, let do not forget that leather suspension has also two negative moments. First is that leather is greatly change with time and it is absorbs moisture. The degree to which leather doe it ware with the way leather manufactured and how it was processed.  Of you look for leather manufacturing prosees:

http://en.wikipedia.org/wiki/Leather

then you realize that a simple piece of leather is very complex and in many cases not well normalized  chemical compound.  The phrase “not well-normalized” in my view is the key. I am sure that the leather production standards are perfect to make a good leather jacket but I do not think that the people who produce leather care about the speed of sound propagation across leather and to keep THAT standard. Also, I do not know if the flexibility of leather per thickness is standartiried to a degree as it might be important to out drivers to maintain the targeted driver Q. In the driver conversion we uselessly get leather “whatever we can get” not to mention that we do not care how our leather performs next year.

From what said I think the direction that some manufactures go I feel is also very perspective. Some manufactures produce suspension that is sort of mix between rubber, leather and foam. Foam eats a lot of good vibrations, rubber has too much inertia, leather is not stable. I have seen some suspensions when I was touching it as I was not able to say it is was rubber, leather or foam. I still have no idea what it was… it might be heavy mineralized leather as well. For instance the 4.5” bass drivers that I use foe MiniMe have leather suspensions, at least it is what I say. I am sure that it is not leather but a very cheap syntactic material but if it walks like a duck and quacks like is duck then who care if it is not a duck?

Hello,

Do you have a link to contact Oleg the leather suspension maker?

David

David,

You can trace him from his commercial site

http://www.field-coil.com

I do know if it his site but he most likely hangs around there. I think that field-coil.com is rather a group of people with certain interest and certain agenda then just one guy. Anyhow you might take it from there. We corresponded I would say 10 years back and at that time he was in Germany.

Thanks a lot!

Do you have a link too of the Orgue enterprise?

Have a good day: David

zycomatique wrote:

Thanks a lot! Do you have a link too of the Orgue enterprise? Have a good day: David