2. analog
  3. 1261442675

Ever so slight platter wobble

I have a bix DIY table that I got from a friend. I noticed that when I look at the bottom of the platter or actually put a solid object underneath the edge of a spinning platter, every revolution the platter will touch the object. You can hear it. The wobble is tiny less than 1/2 mm at the edge. I dont have an arm for this table yet so I do not know how it sounds and I am wondering if I should even keep it. Will 1/2 mm impact sonic performance. Scientifically speaking it should not, right? Since whenever the platter dips, so will the tonearm. Do non diy or high end turntables also have tiny amounts of wobble?
malammik
unsound
7,329 posts
 
This is a common problem, that usually occurs when the user plays too many records consisting of Rock and Roll :).
mickeyf
153 posts
 
Were you working the camera in the Blair Witch Project? I actually threw up a bit in my mouth a bit watching that....

Anyway, is it sandwiched?, like the top of the spindle and the underside thread together to clamp the platter? or through and just resting the platter like the Regas. If so is it tightend right down? If so, and there's still some play maybe it's missing a washer, and perhaps putting a thin washer in under the platter will snug and flatten it. Not so much a washer but just a flesbible rubber diaphram, you might get one to fit in a plumbing section or just fashion it from some thin rubber/vinyl sheet. Haven't seen this one before but just a thought....

cheers

finski
malammik OP
10 posts
 
Hey. The wobble video is wobbly. The table was on a floor and I did not have good support. Thanks for the advice. I will try that out. The platter is not sandwiched.
mickeyf
153 posts
 
So, then does the spindle wobble in it's seating with the platter off? ie can you shift it even slightly from side to side with the platter removed but the spindle's in place?
ie not 'flesbible' but flexible,ar ar.
ptmconsulting
1,000 posts
 
I'd be careful about any kind of washer, since that would intruduce an interface between platter and spindle that is not a firm and tight connection and can affect your sonics.

Try moving the platter about the spindle and see how that works. I had the same problem on my old VPI and this is what they suggested to fix the issue, which it did. Make sure it is pressed down firmly after seating. On the VPI this was done by cranking down the threaded record clamp, but I don't know what that means on your table and if it has a record clamp that is threaded or not.

Good luck,
Bob
More to discover