chakster I've noticed you've got those AT-616 pneumatic feet under your "naked" SP10 mkII that you're using with tonearm pod.
@chakster
Look again. the AT616 are no where near the SP10.
The Sp10 is held up by Solid SS columns. These columns are bolted into the Sp10 and the Plinth.
The AT616 are then placed under this plinth - Three of them.
The Plinth holds the Armpod as well.
Understand that this setup went with through many versions.
Prior to the that Sp10 project I had personally built a plinth of multi layer birch / mdf and aluminum. I believe its around 50 lbs.
Here is a picture of it.
https://photos.app.goo.gl/XYRehswH3vhtABBP6
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What I was getting at with the AT616.
The AT616 are what I
would call a first level good pneumatic suspension.
They are not as effective as the feet under La Platine.
I used the slate material as an example to you, because you were referencing a dealer on that other thread that sells alot of turntables made in slate which I imagine he gets from a local quarry. If you replace the AT616 with the slate you create a path both ways for vibrations.
The turntable would no longer be self-isolating.
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@lewm @chakster
lbelchev discussed La Platine concept/design on the other thread that both of you have posted to. I believe the following post is eloquent and self explanatory.