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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? The caT
"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
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