In the TCSounds new driver thread, AJ said
"Pro units and pistonic cones = oil + water."
Does AJ or anyone have any evidence that metal is more pistonic than paper (cones are actually a cellulose "alloy")?
Pistonic behavior/relative stiffness is indicated by the first breakup freq, except where it's damped out of existence.
If you make a beams or plates (which structurally is just a 2-D beam) of wood and metal that are the same width and weight, the wood one will be far stiffer because of it's greater height; stiffness increases with the cube of the height.
As an aside, it's always been a mystery to me why, if you're set on a metal cone (which I believe is marketing driven as a result of people's "intuitive" experience of metal), why more aren't made of magnesium.
It would be the best of all metals (except beryllium) because it's the lowest density (thus thicker/stiffer for same the weight, per above), and has internal damping an order or magnitude higher than other metals.
"Pro units and pistonic cones = oil + water."
Does AJ or anyone have any evidence that metal is more pistonic than paper (cones are actually a cellulose "alloy")?
Pistonic behavior/relative stiffness is indicated by the first breakup freq, except where it's damped out of existence.
If you make a beams or plates (which structurally is just a 2-D beam) of wood and metal that are the same width and weight, the wood one will be far stiffer because of it's greater height; stiffness increases with the cube of the height.
As an aside, it's always been a mystery to me why, if you're set on a metal cone (which I believe is marketing driven as a result of people's "intuitive" experience of metal), why more aren't made of magnesium.
It would be the best of all metals (except beryllium) because it's the lowest density (thus thicker/stiffer for same the weight, per above), and has internal damping an order or magnitude higher than other metals.
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