LP eccentricity, spindle hole center,The fix??????


Hi all,

I'm one of those audiophiles, 67 years of age, that wonders about the effect of the accuracy of the center hole. Some of the LPs I put on the TT have play due to a center hole that's punched out of round, too large or what ever.

I'm playing a record on a Denon 308 direct drive table using a system devised by a LJT Mfg in Canada to reduce eccentricity and help flatten warped records using a peripheral ring clamp in conjunction with a 1420 gram spindle clamp. The trio comes along with a cnc machined polycarbonate centering disc that straddles the record after the clamp ring is set registering on the outside diameter of the record. I can feel play regarding the center hole as I implement the OD centering device. I'll measure it tomorrow, just a few thousandths. The music sounds fine to my ears but I wonder what the relationship is to the record grooves, the outside diameter, and the center hole.

A while back a TT was made that had an extra arm that MEASURED THE ECCENTRICITY of the record and re centered the disc for play, it sells for big bucks if you can find one.

FINALLY, Your thoughts on the question?

regards, Ken Fritz
kftool
Dear Raul, I agree. But the only part of the market we have SOME buying power is the specialised audiophile LP market. And even here - take the infamous Classic Records 200gr issues which were certainly plagued with pressing faults and warped samples - even with LPs which do ask some serious retail prices, we seldom get the excellent and careful pressing quality we ask for and deserve to get for our money.
I am collecting LPs since the early 1980ies.
There always were certain companies showing great care in what they released - excellent quality control. JVC Japan, King Records, for a long time DECCA and EMI (at least in their classical department...).
Today maybe we could put some "pressure" for quality on Classic Records, Speaker Corners etc.

You are right - we should try.
We all.
A small group is not enough.
We would need something (something like...) like the international boycott movement which eventually helped overcome apartheid in South Africa in the 1980ies/early 1990ies. That was a display of positive buyer's power (at least here in Europe).

I think the best way would be if Classic Records and all other audiophile record companies would just start having all their LPs pressed at JVC / Japan.
That would solve all our headaches.
I am in.
Dear raul, I don't know whether the old Microgroove Longplaying Record standards can be found anywhere on the web (but I believe so). I have them in the old printed papers of AE Anthology and Wireless World.
Dertonarm: Ok, good that you are of that kind of people that like " live its life " ( make things happen. ) and not only see how its life goes through.

Please email me to start about. All of you auio and music lovers friends ( elsewhere you are ) are invited too.

Regards and enjoy the music.
Raul.
Dear Raul, dear all, - I think the best way to start would be a foundation here on Audiogon. A kind of "Audiogon quality record collectors society" (...which is just meant as an analoghy - not my propolsal for a name for this group or society...).

It was Raul's idea and I believe Raul should start and name this.
However I think if we can relate this in any way to Audiogon it will be a much wider public and therefor much more (positive) power.
That way it would be more promissing - the chance to get really some influence on the LP-manufacturers and distributors.