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  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 (501-550 of 573)
Click title to read one, or click date to read all below it.

03-03-12   Hi albert, thanks for the responce inrelation to the nvs us ...   Dev

03-03-12   While i was visiting syntax last month, he checked the speed ...   Unoear

03-03-12   Albert - excellent, thoughtful response. you may now don yo ...   Jazdoc

03-03-12   Dear henry, i guess i have been too lazy to check the kenwoo ...   Lewm

03-03-12   Was invited to have a listen to 2 audio systems and did brin ...   Sksos1

03-03-12   Unoear ask: so far no turntable has passed the test as i co ...   Albertporter

03-03-12   Lewm posted: i use the ti ferrishield too, although it had ...   Albertporter

03-03-12   Hi albert, yes, the string-driven big micro syntax machine ...   Unoear

03-03-12   Perhaps the key to the accuracy and consistency of many dd t ...   Halcro

03-04-12   while i am a fan of direct-drive but i am not sure that's a ...   Hiho

03-04-12   Hiho, well said. the l07d is among those that use the servo ...   Lewm

03-04-12   Have been following and reading all the posts since i posted ...   Rugyboogie

03-05-12   i don't know enough of electronics to decipher servo circuit ...   Hiho

03-05-12   Unoear: i can hardly believe after all the work and effort ...   Albertporter

03-05-12   For $400, the timeline needs to be built with an internal cl ...   Plinko

03-05-12   Lew and others with "the big spindle" issue. coul ...   Pryso

03-05-12   Hi albert, yes, having the rockport sirius lll here last ye ...   Unoear

03-05-12   Alberporter: intuitively, i would think that what a dd turn ...   Mmakshak

03-05-12   Guys, yes, i thought of offsetting the timeline so it rests ...   Lewm

03-05-12   Mmakshak, the plinth is important in that it provides a sol ...   Albertporter

03-05-12   Lewm do you think that adding mass to the platter of an exis ...   Lespier

03-05-12   Here is my vid of me touching the side to test pulsed speed ...   Lharasim

03-06-12   Lharasim which turntable are you using for the demo in your ...   Rugyboogie

03-06-12   While i agree with albert on the importance of the mass and ...   Lewm

03-06-12   i don't think the damping factor of a servo circuit is dete ...   Hiho

03-06-12   Hiho, the point is that if you don't know enough about the c ...   Lewm

03-06-12   Doesn't this discussion on dd servos highlight the question, ...   Dover

03-06-12   Dear dover, you wrote, "correct me if i'm wrong, but is ...   Lewm

03-06-12   i believe the brinkmann bardo and oasis use the gen ...   Hiho

03-07-12   Servo design in a dd 'table certainly includes the expected ...   Atmasphere

03-07-12   Hiho, lets keep in mind that what you quote from the brinkma ...   Lewm

03-07-12   Lewm, i meant dc motors. as far as i know the following dd's ...   Dover

03-08-12   Dover, i think my response to you was too harsh. i apologize ...   Lewm

03-08-12   Lewm, no worries. i think there is a lack of real info as dd ...   Dover

03-09-12   Travis has a dp100. but where is travis (aka t_bone)?   Lewm

03-10-12   yeah, i know. it's full of their own propaganda but i was ...   Hiho

03-11-12   I sent him a private email about 10 days ago but have had no ...   Lewm

03-19-12   Lewm, are you in contact with bill regarding the modificati ...   Albertporter

03-20-12   Albert, will talk to bill this week on that subject, i hope. ...   Lewm

03-20-12   ΟΚ, but we have to decide about the correlation be ...   Geoch

03-21-12   No argument here. it does use fishing line for a drive belt ...   Lewm

03-21-12   Albert, i know the engineer well who designed the mods for t ...   Dover

03-22-12   Dover, considering the shipping risk and time needed to get ...   Albertporter

03-22-12   Hi albert - no that sounds fine. the engineers modus operand ...   Dover

03-22-12: Albertporter
Thank you Dover.

Bill says the mods should make the transformer, motor and sense coils more reliable (longer life) so even if there is no appreciable performance upgrade it's still a worthwhile venture.

If it sounds better I'll be doing the victory dance.

Albertporter  (System | Threads | Answers | This Thread)


05-29-12   Hi henry - have finally managed to try the sutherland timel ...   Dover

05-29-12   Hi dover, congratulations. good to hear :-)   Halcro

05-29-12   "2 mm on the wall" is meaningless, unless you tell ...   Lewm

05-29-12   I picked up a timeline as i was interested in how our scully ...   Atmasphere

05-29-12   Atmasphere - think of all the "wear and tear" of a ...   Dover

05-29-12   Dear dover, i don't. but i am surprised you were even able ...   Lewm

05-29-12   Lewm - i positioned vertically a silver metal marker, about ...   Dover

06-01-12   Dover, it has been sitting for some decades, i suspect. the ...   Atmasphere

06-02-12   I almost bought the timeline. glad i didn't. using a fluke d ...   Rockitman

06-02-12   Rockitman, i have been doing almost the same. card as test ...   Dgad

06-07-12   Here are some of my own observations and hypothesis: 1) reg ...   Aoliviero

06-07-12   I would like to qualify my statment above: "that’s why ...   Aoliviero

06-25-12   I have just tried the fieldpiece srpm2. it is a laser digit ...   Peterayer

06-25-12   can't you hold the the tachometer steady or clamp it to some ...   Hiho

06-25-12   Yes, and i did. i guess i was not clear enough. i placed t ...   Peterayer

06-27-12   Dear peter, i hate to be a pain in the arse, but you wrote, ...   Lewm

06-27-12   Hi lewm, the fieldpiece is powered by three aaa batteries. ...   Peterayer

07-10-12   After reading the posts, i thought it would be helpful to ad ...   Banpuku

07-11-12   I agree with banpuku about hearing the effects of record cen ...   Halcro

07-11-12   I guess in the best of all possible worlds, your turntable's ...   Lewm

07-11-12   Lewm ~ i have the ttweights rim drive and the timeline shows ...   Sksos1

07-11-12   Dear skos, you are preaching to the converted. i am a confi ...   Lewm

07-12-12   Lewn ~ a customer of mine has the ttweights upgraded player ...   Sksos1

07-12-12   God never meant for audiophiles to have a warm and fuzzy mom ...   Lewm

02-10-13   I notice very few, if anyone, is using a test tone and measu ...   Dinster

02-14-13   i kept hopping someone else would chime in. i have the fe ...   Albertporter

02-14-13   Clarification of my post (above). i bought the ultimate a ...   Albertporter

02-14-13   I have checked my vom with the rives test cd and it reads +_ ...   Oldears


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