No such thing exists in the context of wave propagation in solid media. The term is most commonly associated with one-way energy transfer in gear assemblies or torque converters. Just try measuring the output of an accelerometer on the top side of a cone subject to vibration at the pointed end.
It is now audiophile jargon - once a designation has been used for more than thirty years it is considered adopted!
The Jadis JD1 and Theta Drives adopted this principle as well.
BruceD
It's not a principle. It's lore.
The Goldmund cones are not spikes, tiptoes or similar. They are optimized structures using three type of materials to drain vibrations from the equipment.
Goldmund carried extensive studies on this subject while developing their aluminum speakers - as far as I remember they used a bracing system including brass and steel to drain and dissipate the vibration of the aluminum panels. Their pioneering work was fully described in french audio magazines in the late 80's or early 90's - I am not sure anymore of the exact time - long before others started building aluminum box speakers some decades after.
Well, they are spikes and as such what they will do depends to a large degree what surface they are sitting on and how much weight is on them.
I'm not saying spikes are good or bad, just that they can accomplish very different things, isolation or coupling, depending on specifics.
Ok, if a bird lands on the top of the Egyptian pyramids we can consider they are inverted spikes ...
Just wanted to say that there is lot more in the Goldmund cones than just the shape.
theories or no, you should have the right to try an item in your system and IF it produces an improvement and not just a difference, then it works. i once sat in on a demo of Aurios bearing based isolators. my thought was that you would place it under something with moving parts like a disc trtansport. nope, it was placed under a Wadia D/A and it slapped me in the face with another 1/2 octave or so of bass.
expectations can be undone in a flash.
An electrical diode, in general, allows current to flow in one direction only....apply the (+) voltage to one side; current flows freely - apply the (+) voltage to the other side; no current flows. There are a number of variations that behave a bit differently, but that is the basic function.
The mechanical diode is similar in that if rotational force is applied in one direction, power is transferred through, if applied in the other direction, no power is transferred through.
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