2. analog
  3. 1320876538

Turntable speed accuracy

There is another thread (about the NVS table) which has a subordinate discussion about turntable speed accuracy and different methods of checking. Some suggest using the Timeline laser, others use a strobe disk.

I assume everyone agrees that speed accuracy is of utmost importance. What is the best way to verify results? What is the most speed-accurate drive method? And is speed accuracy really the most important consideration for proper turntable design or are there some compromises with certain drive types that make others still viable?
peterayer
ketchup
698 posts
 
Unfortunately bringing the motor closer to the platter also brings it closer to the cartridge as well.

It also results in less contact between the belt and the motor pulley. That seems like a bad idea because there's already so little contact there. Right?
sarcher30
596 posts
 
Good point Ketchup. The belt is more likely to slip on the capsan than the platter. Of course if it uses a sub platter that problem is reduced.
Ag insider logo xs@2x
banquo363
371 posts
 
I tried it on a "DD" SP10 MK2 and it was off, no way to correct like the MK3 offers speed adjustments so the owner has to send it in.

Not what I wanted to read. I hate this thread.

Seriously: did the built-in strobe of that particular sp10 show that it was holding speed? And the timeline showed differently?
hiho
451 posts
 
Dev: "I tried it on a "DD" SP10 MK2 and it was off, no way to correct like the MK3 offers speed adjustments so the owner has to send it in."
I believe there are trim-pots inside the chassis that can vary the speed minimally but I just don't know which ones. Maybe the trim-pots are for other functions. I don't have my SP-10mk2 or the manual anymore to verify that. Perhaps other more knowledgeable owners can comment on this. Good luck.

______
dev's avatar
dev
832 posts
 
Banquo363,

yes unfortuantly. I was told he is sending it to someone to correct which isn't suppose to be too hard. I read from someone else whom posted prior on the old NVS posting in relation to "DD" issues.

Look at this being a positive learning experience and not negtive, no need to be upset.

If your table is off then you can address such, if it is off slightly I would be shocked if you can hear such anyways.

End of the day it's all about listening to music.
More to discover