Nude Turntable Project

Dover - Been around since the Mycenae age - the 16th to 12th centuries BC. Had I been around at that time I would have used it in my first TT.

I believe that Mr JC Verdier took the concept of the Platine Vintage Granito from this period. He just improved on the remote motor a bit. It used to be a human pedaling back then trying to keep speed stability.

“Granito is a material composed by little pieces of marble of very different origin agglomerated inside a mold with cement. Machined and polished. The resonance of the plinth with its suspension is about 5Hz and it is well absorbed by the air cavities."
Mr. JC Verdier

So there are different ways to go about this.
You can try to pass resonances through and hope it is one way. Or you can absorb them. The Platine has been scientifically analyzed, studied, and has passed the hardest test of all - time.

The way this Platine is made, I feel you could probably place it on any decent kitchen table and get good sound. My Verdier manual provides three options for installation. hard wearing furniture, wall mount, sandbox.
My Vintage Granito is on a solid maple platform which utilizes an elongated sandbox, on the concrete floor.

Not as pretty and "audiophile" as a vibraplane. But I don't have to worry about maintenance and adjustments due it going out of level and leaky bladders :^). I also don't feel a need to please other audiophiles....just myself. But I am my worst enemy. Glad I am a hobbyist and not in this business. Now with my other hobbies I can see getting into one of them on a business level later.
cheers

Richard – thanks for turning me onto the “alpha leg” :^)

I may try it with the sp10 setup later. One Stainless Steel leg and 3 PVC or other slower material legs. The JN Lenco uses 3 bear paws. I can’t even begin to imagine how many development hours Jean Nantais has into this table. It is very much about absorption of resonances and works well. So I am reluctant to try it here. Its 100 pounds doesn’t help. If JN is perusing here and sees this maybe he can attempt it. Something tells me he won't looking at a thread with a title that used the word Nude for any ideas :^)
Maybe I will email him.

Cheers

09-02-13: Ct0517
Richard – thanks for turning me onto the “alpha leg” :^)
I may try it with the sp10 setup later. One Stainless Steel leg and 3 PVC or other slower material legs.

With regard to your proposed 4 legged experiment, it appears that the physics and engineering principles underpinning the optimal mechanical grounding principles have been overlooked.
A tripod is inherently more stable than 4 legs. A tripod distributes the weight evenly around the centre of gravity across its 3 legs. This is why cameras and theodolites are usually mounted on tripods, they are more stable. Note also your Verdier TT uses 3 feet to take advantage of this principle.
The use of a grounding leg plus 2 non grounding legs to achieve a single point mechanical grounding works far more effectively with a tripod ( 3 legged ) configuration. The Goldmund Reference Technical Report in the Absolute Sound magazine, issue 51 has an informative discussion for those wishing to understand the principles of mechanical grounding.

Thanks Dover. Sometimes I get ahead of myself when I get hold of an new idea. I tend to get a little giddy and feeling like a little kid. My version 5 will support 3 legs not a problem as they are screwed in on both sides. Project added to the overall list. Its no. 14 right behind no. 13 – Build wife new kitchen :^( I am thinking of outsourcing this project so I can play with my audio stuff more this winter.

A tripod is inherently more stable than 4 legs.

Not true........try sitting on a 3 legged stool?
Four legs is generally accepted for stability in chairs.......but in office chairs on castors.......even 4 castors is not sufficient for stability with 5 castors being mandated for safety in the workplace.

The reason 3 supports is often used for turntables......is that the 3 supports will ALWAYS make contact on the supporting structure.
With 4 supports......depending on the load of the turntable.....only 3 may be making full contact.
With 4 legged chairs......a person's weight will 'spread' the bottom of the legs so that all 4 legs are weight-bearing whilst without the load of an occupant......only 3 legs may be fully in contact with the ground?