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Michell Gyro Se running a little slow

I have noticed that some songs sound slower off my table than they should. This is most evident on Led Zeppelin's Whole Lotta Love, Simon & Garfunkel's Cecelia and The Smiths' Frankly, Mr Shankly. Most of the time, the difference is not noticeable, but on some songs I can pick it up. I'm not sure what the problem is. I have the external power supply but am not sure if that is the issue.
ssayeed
ssayeed OP
37 posts
 
I checked the oil first thing so I don't think that is the issue. I actually filled the oil well a little while ago. I'll check the bearing to see if that is the problem and get a strobe as well. Viridian, what can I check on my other components to see if the problem is elsewhere.
sunnyboy1956's avatar
sunnyboy1956
424 posts
 
Check to see that the main screw under the spindle is tight. If not fully tightened at installation it can become loose resulting in a lower speed. Had this problem some time back. Need a coin to fully tighten it.
NJoy
cjnolan
27 posts
 
Get the KAB speedstrobe or another strobe and check the speed. Since you have the HR Power supply it's easy enough to adjust it. My Gyrodec was running about 1% fast prior to adjustment. But I never had a wow-flutter problem.

So, as has been mentioned:
--Make sure bearing is lubed and clean
--Clean your belt
--Clean the pulley an the groove on the platter
--check speed with strobe (you can also use a generic strobe disk from Vinyl Engine, with an incandescent light. Just not as accurate and a little hard to see)
--Try with the standard power supply to see if you have the same problem/issue
--Grab a piano album and make sure the notes don't sound 'sour' or vary during sustained notes
daverz
487 posts
 
By the way, I found Pledge Multi-surface cleaner very good for cleaning the platter.
gerardff
78 posts
 
I have an Orbe with the AC motor. Get one of these for $25.
http://www.amazon.com/gp/product/B000MMW0PY/ref=oss_T15_product.
It's cheap and you can run a LP with it to see if indeed you are running slow. Usually as a belt gets older it starts to shrink or harden and it causes the TT to run a bit fast. I used the Wally tools to test speed but the LP had a slight warp in it and caused a error in the read so I bought a laser photo tach and it worked great. If you can adjust your PSU your better off than me. The QC PSU has no voltage adj., so the motor pulley is what really decides your speed. I have two and one runs a bit slower than the other.
I agree that other things may be at work but it should show up on more than just a few LP's no matter what the cause unless its in the LP(?)
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