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RE: Ringmat anyone?

Posted by user510 on August 27, 2016 at 12:30:29

In Reply to: Ringmat anyone? posted by Dave Pogue on August 27, 2016 at 05:33:52:

I have thought that the design of the original ringmat is of some interest in that it actually describes putting a little bit of suspension between the record and bare platter. The suspension is arranged by the strategic spacing of the cork rings on the thick paper substrate, to either side, that causes the weight of the record to flex the paper somewhat. A spring. Paper, cork and....air. IIRC Ringmat also offered a sort of damper piece to go over the record at the spindle pin location. There was a time when I paid some attention to the patent that describes the Ringmat.

I suspect (and do think) that it is possible to worsen the conditions of record playback to a considerable degree and still get respectable sound quality.

In reality the best thing to do is arrange for an intimate mating between mat material and record to maximize damping the record from below as its groove is being traced from above. Additionally, record clamps and or pucks can help when they have, in contact with the lable surface of the record, a type of surface/material that damps vibes from the top side.

Screw-down clamps that induce a reverse curve to the record, causing it to make better contact with the mat (or bare platter) surface are a good thing. I do kind of miss the clamping system that was employed on that Teres I used to own. It clamped well enough to straighten out many warped records.

Mostly I am intrigued with vacuum hold down methods. At one time Thorens made a vacuum platter mat. Early 1980's. It would be a perfect accessory for their top of the line TD126III but could also be used on any of their belt driven models. These have always been scarce.

-Steve

Edits: 08/27/16 08/27/16

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