AudiogoN Forums: Turntable speed accuracy

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 (System | Reviews | Threads | Answers | This Thread)

11-09-11

Responses (351-400 of 573)

Click title to read one, or click date to read all below it.

01-24-12 The timeline is giving you one data point per rotation. so ... Tonywinsc

01-24-12 Thanks tony, a perceptive and illuminating commentary :^) Halcro

01-24-12 Halcro, great info and thanks for sharing. what you have men ... Dev

01-24-12 Dear dover: about thread/high mass platter my as are not rea ... Rauliruegas

01-24-12 halcro, i can't think of a reason for a bearing to provide ... Atmasphere

01-24-12 Use of a capstan, etc, or any strategy that increases the ar ... Lewm

01-24-12 what style bearing is in the raven? i remember reading abo ... Ketchup

01-24-12 There are a couple of different bearings used in this table, ... Dev

01-24-12 Dear halcro: you always can try a different thread's build m ... Rauliruegas

01-24-12 Halcro - great game eh. looks like dokovich has shown the ot ... Dover

01-24-12 Lewm, that is a good point about belt contact with the plat ... Peterayer

01-24-12 Hi peterayer, i had mentioned in the nvs thread i had test ... Dev

01-24-12 Hello dev, yes, i had read that now deleted nvs thread, but ... Peterayer

01-24-12 The concept of "belt creep" and what to do about i ... Lewm

01-24-12 Hi ralph, that's a quote from peter moncrief's incisive arti ... Halcro

01-24-12 Same model as yours which was also too fast ironically, the ... Dev

01-24-12 Hi lewm, but using a mylar belt has it's own issues. static ... Dev

01-24-12 Unfortunately bringing the motor closer to the platter also ... Sarcher30

01-24-12 The comment about using viscous drag or friction to dampen p ... Tonywinsc

01-24-12 it also results in less contact between the belt and the mo ... Ketchup

01-24-12 Good point ketchup. the belt is more likely to slip on the c ... Sarcher30

01-24-12 not what i wanted to read. i hate this thread. seriously: ... Banquo363

01-24-12 i believe there are trim-pots inside the chassis that can va ... Hiho

01-25-12 Banquo363, yes unfortuantly. i was told he is sending it t ... Dev

01-25-12 I agree with atmasphere. turntables with excellent soundsta ... Aoliviero

01-25-12: Halcro

In my experience, belt drive TT's with AC moters with ample torque and low friction fair better than DC motor driven TT's all else being equal.

Perhaps you should listen to a good DD turntable with a coreless DC servo-controlled motor alongside you Raven AC-2 as I have?
No real comparison actually........
Our dear friend Lew wanted a moratorium on discussions of the merits of turntable drive types but I think that's difficult when it comes to the subject of speed consistency and accuracy?
We have heard of the supposedly superb accuracy of some belt-drive turntables according to the Timeline but as yet we have seen no real evidence?
Is someone able to upload a clip of one of these belt-drives with the Timeline....onto YouTube?
Perhaps you Andrew?
Halcro (System | Reviews | Threads | Answers | This Thread)

01-25-12 Dev, the lenco is pretty near infinitely adjustable, as the ... Lewm

01-25-12 Lewm, have been reading this for awhile and want to as ... Uru975

01-25-12 Dear uru, i am not the font of all knowledge on this subject ... Lewm

01-25-12 Thanks, dev. i was just joking, but your post does move me c ... Banquo363

01-25-12 Lewm, the artemis is an interesting design. i have not heard ... Sarcher30

01-25-12 perhaps you can try grounding the motor housing? _______ Hiho

01-25-12 Lew, are you saying that you was able to get the lenco diale ... Ecir38

01-25-12 Sarcher, what is the evidence that the hum is (or was) due t ... Lewm

01-25-12 Halcro, i'm not sure i agree with peter on this one. our mod ... Atmasphere

01-25-12 Halcro, in my statement about ac belt driven tt's vs dc mot ... Aoliviero

01-25-12 (quote)sarcher, what is the evidence that the hum is (or was ... Sarcher30

01-25-12 Hiho, the motor was grounded. i am not the only one with a h ... Sarcher30

01-25-12 lew.......have you not tested the timeline with and without ... Halcro

01-25-12 Henry, i've done it both ways with the lenco and mk3. the dp ... Lewm

01-25-12 Lew, how about the l-07d? sorry if i missed it... Mab33

01-26-12 I decided to try another method for the thread drive. i conn ... Halcro

01-26-12 Halcro - looks like the 2 threads are touching. if so you mi ... Dover

01-26-12 Empire tt's based on ac motors using belts. Aoliviero

01-26-12 Dover, i kind of like the idea of not placing lateral loads ... Halcro

01-26-12 the empire is of course ac synchronous drive. but most of m ... Atmasphere

01-26-12 increased friction and additional vibration/noise, especial ... Ketchup

01-26-12 Hi dev - just curious regarding the sp10 mkii that you teste ... Ct0517

01-26-12 Dear mab, l07d is not in service at this time. i am re-wiri ... Lewm

01-26-12 Hi ct0517, i really did not pay attention, the owner said i ... Dev

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