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Another Platter Speed queston

So I got the Dr. Feickert platter speed iPhone app and tested my Well Tempered Classic TT with the Analogue Production's Test LP.
When I ran the track with the 3150Hz tone, the app was reading a mean frequency of 3171Hz with my speed at higher than 33 1/3 by about .05% if I remember correctly. So I have three questions:
1) If the tone isn't exactly 3150Hz won't that effect the accuracy of my TT speed?
2) How would one adjust the speed on a Well Tempered TT?
3) Could the test LP's tone be wrong or is the app reading it wrong?
thanks
ebuzz
brf
1,715 posts
 
The Platterspeed app is based on the premise that in order to reproduce the 3150hz tone, the table must turn exactly at 33 1/3 rpm. If the table runs slow, the test tone produced will be lower than 3150hz.

Since your table reproduced a test tone greater than 3150hz, it is assumed that your table runs faster than 33 1/3rpm.

If you are concerned about the accuracy of the test tone, you could always use another 3150hz test tone from another test album/manufacture and compare the results.
ebuzz OP
104 posts
 
Thanks Brf: Now I get it. All I have to do now is figure out how to adjust. First think I'll try is a new belt.
atmasphere's avatar
atmasphere
11,639 posts
 
If there is build-up on the motor spindle due to perished belt material, it can run too fast.
ebuzz OP
104 posts
 
I'm also going to try and clean off motor spindle with some alcohol to see if that works.
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