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VPI Classic platter - is center milled?

Is the vpi classic platter milled with a depression in the center? vpi recommends not using a mat, but my platter has a slight rise in the center.

With the provided ring clamp and gasket, vinyl stays 2 mm above platter with a lot of wobble. If I use the rubber mat, it seats the vinyl firmly.

Thanks for input.
abp689

Showing 3 responses by ptmconsulting

ptmconsulting
1,000 posts
 
Just put any straight edge on the platter and you should know immediately
ptmconsulting
1,000 posts
 
I have the new Classic Ceramic coated platter. It does indeed have a shallow label sized indentation on it. The platter is totally flat, except for this depression.

I have found that the rubber mat does nothing for the sound. I use the one piece clamp, but found that it does not work properly with the mat. Without the mat the record edge tends to rise a bit when the clam is applied. Makes sense since the clamp is pushing the center of the record down into the shallow depression.

Best for me is to use the rubber washer and put the clamp on lightly (not too tight).
ptmconsulting
1,000 posts
 
I do believe that the classic platters definitely benefit from the periphery ring. I don't have one, but it is obvious to me that the record would lay flatter on the platter with that ring on it.
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