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Periphery Record Rings

Who uses one of these periphery record rings, like the VPI? Theoretically they make a lot of sense. What is your experience with them?

Has anyone seen this auction over at Audiogon ...

http://cgi.audiogon.com/cgi-bin/auc.pl?accstwek&1235444247&1234963855

It's a brass ring without the outer downward facing "lip" on the VPI ring, which won't work on all tables due to lack of belt clearance. I would guess brass would be better, since it is denser and purportedly results in better sound than other metals. Anyone seen one of these "ttouter" rings and can vouch for the quality of the workmanship and uniformity of it?

thanks,
Bob
ptmconsulting
dgarretson
2,394 posts
 
Hi Bob, we seem to think along the same lines... I may try their brass mat, based upon my recent positive experiences with brass clamps and bearing housings. At 3.5 lbs. the brass mat should contribute both to flywheel effect and to resonance control. But IMO a periphery ring is a PITA.
sbank's avatar
sbank
2,038 posts
 
The VPI ring hasn't been a PITA for me. Agree w/Dgarretson about the benefits, not to mention that warped LPs will never be a trouble again. Cheers,

Spencer
ptmconsulting OP
1,000 posts
 
That's my initial thought Spence. The primary issue with my rig is nasty subsonic effects. I think a periphery ring would help with that more than a heavier platter, as much as it would be a PITA (not the bread).

I'm mostly wondering about the quality of this new brass ring.
- Has anyone seen it yet or is it brand new?
- Is there any slippage on the LP edge to worry about?
- Should that be damped where they come into contact or just leave it as metal to vinyl?
- Is the concentricity (is that a word?) good enough to ensure that there is no out of balance issues that would affect speed stability?

Bob
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