Raul, With the big Micro Seiki's, and since we are all about building new or modifying original products to suit our beliefs and desires, isn't is possible to get around their perceived problems with the armboard mount by using (i) an outboard armpod, or (ii) a modification of the original cantilevered design? Since those tables reportedly have many virtues (never heard one myself), wouldn't this be worth the effort?
Here is another bone for contention: It's fine to say that the "shelf" is the plinth when one is using an outboard armpod (regardless of whether the turntable itself is plinth-less), but so far as I can tell, no one is mechanically fastening the two entities to the shelf. Thus, there is nothing to prevent disparate energetic interactions between the turntable proper and the shelf, on one hand, and the armpod and shelf, on the other hand. As you know, Henry, a shelf will be put into oscillation, by energy put into it. Objects that just happen to be sitting on a node (an area of the shelf that is not moving) will be relatively immune to the problem of the shelf vibrating under it. (The location and number of such nodes will be related to the material of which the shelf is made, its density, its thickness, and thus its resonant frequency.) Other objects that happen to be at a point of maximum movement of the shelf as the wave of energy is absorbed, expended as heat, and dissipates, will move most. Therefore, it is quite likely that the arm pod and turntable will be differentially effected by resonance of the shelf. This will cause relative movement of the one vs the other. This will happen more or less regardless of the mass of the armpod and turntable, etc. This is the crux of my argument.
There are some very expensive turntables being made these days with separate arm pods. The Simon Yorke, da Vinci, TOTL Kuzma, and one or two others come to mind. It seems that those designs at least provide very similar mounts for the two separate structures, very high mass, identical materials, etc. Some or all of these also include the mounting shelf, which I think speaks to my point. Such construction could mitigate the problem. I am not arguing that it can't "work"; I am just pointing out the issue that needs to be considered.
Here is another bone for contention: It's fine to say that the "shelf" is the plinth when one is using an outboard armpod (regardless of whether the turntable itself is plinth-less), but so far as I can tell, no one is mechanically fastening the two entities to the shelf. Thus, there is nothing to prevent disparate energetic interactions between the turntable proper and the shelf, on one hand, and the armpod and shelf, on the other hand. As you know, Henry, a shelf will be put into oscillation, by energy put into it. Objects that just happen to be sitting on a node (an area of the shelf that is not moving) will be relatively immune to the problem of the shelf vibrating under it. (The location and number of such nodes will be related to the material of which the shelf is made, its density, its thickness, and thus its resonant frequency.) Other objects that happen to be at a point of maximum movement of the shelf as the wave of energy is absorbed, expended as heat, and dissipates, will move most. Therefore, it is quite likely that the arm pod and turntable will be differentially effected by resonance of the shelf. This will cause relative movement of the one vs the other. This will happen more or less regardless of the mass of the armpod and turntable, etc. This is the crux of my argument.
There are some very expensive turntables being made these days with separate arm pods. The Simon Yorke, da Vinci, TOTL Kuzma, and one or two others come to mind. It seems that those designs at least provide very similar mounts for the two separate structures, very high mass, identical materials, etc. Some or all of these also include the mounting shelf, which I think speaks to my point. Such construction could mitigate the problem. I am not arguing that it can't "work"; I am just pointing out the issue that needs to be considered.
