A Copernican View of the Turntable System

Hi Halcro,

I don't understand why it wont load. However, if you google Audio Qualia you can find the relevant plinth related sections. I've also found some use in 'The Practising Scientist's Handbook', written and compiled by Alfred J. Moses (Van Nostrand Reinhold Company, New York, 1978) as cited at http://www.soundfountain.com/amb/sp10plinth.html.

Some explorers tend to emphasise that plinths were seen as a 'necessity' in order to keep the motor and innards of old TT's in place: as well as offering aesthetic advantages. With many of our models and concerns, this is obviously not a requirement and this (along with my own extending listening to a decoupled, plinth-less set up) leads me to suspect that the pneumatic footers and stand-alone arm tower for the Technics SP10 might be the optimum option - from a performance point of view. Anyway, I will give the plinth option my best efforts in order to adequately clarify the/any performance differences.

As always...

Sorry,

Just to note that the use of pneumatic footers has its antecedence in the Mitch Cotter approach that found such acclaim decades ago. However, we're adding the potential benefits of the decoupled tonearm - in our current plinth-less and decoupled set ups.

Very little seems new regarding mechanical management (the use of pneumatic footers and magnetic footers aside) but new developments regarding materials (Panzerholz, aluminium/acrylic sandwiches, viscoelastic materials and the like) do offer interesting possibilities to such old discoveries. But I begin to ramble.

As always...

Dgob, Just as the peritoneum was once seen as a necessity to keep the stomach, spleen, liver, intestines in their proper place. I am keeping mine.

Henry, Good one, re "Tom Henrys".

Dgob: your link has an errant period at the end of the url; delete it and the page loads.

The Mitch Cotter that I'm familiar with had a sprung suspension just like a Linn, only more springs and controlled better with foam inserts, no pneumatics involved.
The main thrust of his design was to remove all the extraneous crap from the direct drive ( motor covers and controls etc ) which removed resonances, and the use of an extremely rigid and inert aluminium/polymer laminated chassis to bolt BOTH the arm and DD motor drive.
Some great ideas embodied in that design in terms of energy control and maintaining a closed rigid loop between platter and arm.