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
Same model as yours which was also too fast ironically, the other table was a 30/2 and was too slow but when we put it on 45 too fast.

Owners were not very happy! specially when they thought it was set up correctly.

What do you do if you have no adjustments or worse the adjustments still don't allow you to get it accurate?

Not one table that I have tried has been spot on including my own with both speeds initially, some were really bad, mine wasn't but I learned that most could not be corrected either, mine was so I was lucky.

This TimeLine tool has assisted providing information that using other tools to set-up really to me are misleading but worse that manufactures are not paying close enough attention building their products.

So mine being off slightly, once I got it spot on I really could not hear nor feel the difference but on others I most defiantly could hear improvements if they were off badly so this is a postive tool to use and will be used in the future by me.

I recently went into a store whom I know the owner but will not mention the name and has some mighty exspensive tables and not one was spot on, he basically dismissed the use of the TimeLine saying they have all been set-up properly blah! blah!

I asked him if he did not mind to allow me to get one set-up using the TimeLine and then have a listen afterwards, it's not hard to do if there is a fairly accurate fine speed adjustment allowing such but the table also must be capable of doing such and this table was pretty darn close in the end but originally off pretty bad and this room we are talking big dollars.

I was told the rep was by the week prior and saying how sweet things sounded, humm!

When we were in the room he was tapping his foot and I said straight up are you for real, sorry but I'm not feeling it and this is a pce when I play at home my whole body gets into it and I just want to get up and boogie.

No way would it have me opening up my wallet but after using the TimeLine the sound was now locked in, the focus was way better, all arround just sounded different in a positive manner and just felt better if you know what I mean in a good way.

He came into the room and without even sitting down said he was already experiencing the difference so guess who will be getting a TimeLine to use.

Still did not leave me feeling the way I expressed above listening in my own place.

Personally I feel acurate table speed should be the basics of a table design, the foundation and then you go from there. If you can't get this right well ... I feel something is just wrong.
Hi Lewm,

but using a mylar belt has it's own issues. Static, dust attracts to it, they only last so long before slippage occurs. You have to spend some time makeing them up all the time etc.

Sorry but I just want to listen to music and not be dealing with that.

I also tried on a Lenco, won't mention the seller but it was also off. I inquired about this and basically got back a answer that it's fairly close. hummm

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.

Albert I had asked you about your NVS, I'm sure you have checked it.

Can you tell us the results.
Unfortunately bringing the motor closer to the platter also brings it closer to the cartridge as well. Which on the TT's I have had with that arrangement caused hum on most of my cartrides. There may be some TT's that sheild the motor well enough to pull it off.
The comment about using viscous drag or friction to dampen platter oscillations on bd tt's struck me. I do my own maintenance on my Sota tt. It is easy enough to disassemble the platter, clean and relube the spindle and bearing. I let it go for a few years and then about two years ago, I got around to pulling it apart and relubing it. I noted then that the tt sounded better, but I didn't really understand why. So now I clean and relube it every year. Some other Sota owners have also mentioned they found some synthetic lubes make it sound better than other lubes. I tried some synthetic lube last Fall and didn't notice a big difference in sound myself. The synthetic lube is very tacky and definitely added drag to the spindle compared to the lithium grease that I was using. Since my speed is pretty rock solid, I guess the drag is not too high.
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?