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Rega RP3 platter is level but plinth is not???


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This is indeed very strange but maybe it is normal. I have been leveling my turntable using one of those round leveler with a bubble in the centre on my glass platter. My TT sits on an mdf board which sits on three Vibrapods on my Sound Organisation av stand that has a glass top. I noticed that when the platter is leveled, the plinth is not and vice versa. I have left the glass platter levelled rather than the plinth. Shouldn't they both be sitting levelled and not one or the other? What is your experience with any Rega TT?

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It could be that the bearing housing is positioned slightly skewed from the perpendicular of the plinth.

That would put the platter in a different plane to the plinth and give you what you are finding with the level variation.

 

I assume your platter spins true with no "wobble" up and down?

 

Have you measured the distance from the top of the plinth to the bottom of the glass platter at the outer rim at 4 equi-spaced points?  (0 deg / 90deg / 180deg / 270 deg)

What was the variation?

 

I have measured my Planar 3's platter and all 4 points are within 0.5mm of the plinth.

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Hi Sierra

 

Thanks. I'll have a look at this tomorrow night. Will the unlevelled sub-platter/plinth have any effect on the VTA of the arm/cartridge since the arm is actually fitted on the platter or is there a certain tolerance that is acceptable I wonder? 

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It sounds like the bearing housing is indeed crooked. Rega are having a "patch" at the moment. For years we would unpack one and it would be the same as the fifty or so before it, there have been a few silly things like this of late. They will sort it out for sure, but it is frustrating. Have you had it for long? It may be worth notifying your dealer to see if they will raise the issue with Synergy the importer.

Good luck.

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Hi all

Thanks for all your advice. Measured the height and it is indeed about .5 to 1 mm off on the front. No impact on sound as fas as I can hear.... Eg sibilance, lack of bass, any form of distortion to the sound. I think I will leave for now and not worry about it. I am sure There is a bit of tolerance built in for this sort of thing.

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Had the same problem with mine about two years ago , found that the hole for the bearing was drilled on a slight angle , I  took a little bit off the top and bottom

 

edge inside the hole to straighten the angle , with a round file , worked ok .

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