AudiogoN
Search Buy Sell Learn MyPage
 Learn > Forums > Analog > 1320876538  Start New Thread | Log In | Bookmark This
  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 (201-250 of 573)
Click title to read one, or click date to read all below it.

11-23-11   Dear raul: if one has built a turntable than which none grea ...   Banquo363

11-23-11   Funny thing that as soon as a new component - which none her ...   Dertonarm

11-23-11   Dear dertonarm/syntax: +++++ " however imho speed accu ...   Rauliruegas

11-23-11   I am not assuming that the main requests are all there, - in ...   Dertonarm

11-23-11   Speed accuracy has inspired two more companies bringing out ...   Thuchan

11-23-11   Dear thuchan, the speednic by allnic looks neat. especially ...   Dertonarm

11-24-11   From what i can see and read about the speednic......it seem ...   Halcro

11-24-11   I downloaded the iphone app and did some testing. the same ...   Tonywinsc

11-24-11   It seems like none of us read each other's posts, except rau ...   Lewm

11-24-11   Dear lewm, disagree. i think they read the posts but they un ...   Thuchan

11-24-11   I found the owners manual online for adjust+ and some review ...   Tonywinsc

11-24-11   Bearing lube for dd turntables is yet another controversial ...   Lewm

11-25-11   When it comes to bearings/ motors and platters i see a diffe ...   Thuchan

11-25-11   Very interesting thread! obviously the question how importa ...   Decibell

11-25-11   Tonywinsc, for records with holes out of centre my engineer ...   Dover

11-25-11   Dover, good suggestion. i have a small, round bastard that ...   Tonywinsc

11-26-11   The allnic speednic works pretty well. i have put two images ...   Thuchan

11-26-11   My kab strobe works pretty well also. with it....the raven k ...   Halcro

11-26-11   Halcro put it in the most precisely manner. the timeline may ...   Dertonarm

11-26-11   I filed the hole in my stereo test record. i improved the r ...   Tonywinsc

11-26-11   Dear halcro, you´re right the timeline is perfect. the allin ...   Thuchan

11-26-11   Dear thuchan, i don't use the timeline as a record weight as ...   Halcro

11-27-11   Purchased a timeline last year after my clearaudio strobe st ...   Rugyboogie

11-27-11   Accuracy or sensitivity of speed monitor device should be pr ...   Lewm

11-27-11   Tonywinsc, you have used the term "runout" several ...   Pryso

11-27-11   Dear lewm, the allnic speednic is battery powered and not so ...   Thuchan

11-27-11   Rugyboogie, i meant with one belt drive tt, sorry! best @ f ...   Thuchan

11-27-11   Runout is the measurement of the eccentric motion in a rotat ...   Tonywinsc

11-27-11   My mistake, thuchan. so therefore the allnic and the timekee ...   Lewm

11-27-11   Thanks rugyboogie, the video was very amateurish but i think ...   Halcro

11-28-11   Dear halcro, 'but the way many are discussing ...strobes (ve ...   Nandric

11-28-11   Halcro, i think you're on the wrong track ... simple physics ...   Decibell

11-28-11   You're right of course decibell. the 'correction' to any sty ...   Halcro

11-28-11   Your timeline device is averaging speed. it is not giving y ...   Tonywinsc

11-28-11   If you take a look at one of the old brochures for the denon ...   Lewm

11-29-11   Dear lewm: yes, they did indeed. these are exerpts from a so ...   Rauliruegas

11-29-11   Dear rauliruegas, this is very interesting! does this docume ...   Decibell

11-29-11   My friend raul. thanks, got it! or as was once suggested, ...   Pryso

11-29-11   Dear decibell: please email me. regards and enjoy the music ...   Rauliruegas

11-30-11   Dear pryso, *now wasn't that non-engineer harry belafonte st ...   Dertonarm

12-01-11   Dear peterayer, do understand. sometimes threads are dissape ...   Thuchan

12-18-11   Hi there-------------------------------testing only.   Rauliruegas

12-19-11   Raul try testing the timeline it goes like this - ...   Dover

01-11-12   dover, that was funny. :-d the thread " ttweights ...   Hiho

01-12-12   I have just fitted a thread drive to replace the rubber belt ...   Halcro

01-12-12   I'm sure because ttweights places many ads here on agon they ...   Sksos1

01-13-12   I have just replaced the rubber belt on my raven ac-2 with t ...   Halcro

01-14-12   Halcro, interesting and thanks for sharing. what's very inte ...   Dev

01-14-12: Lewm
Dear Henry, What about listening? When you set the table up using the KAB vs using the Timeline, were there any audible differences? If the KAB was that far off, on the slow side, you ought to have heard it in the form of pitch distortion and/or rhythm distortion. One would have to think that one of your two devices might indeed be defective. Either that or neither is quite accurate.

I had an interesting experience just a few days ago. When I originally set up my Lenco, I had it running at 33 rpm per the KAB strobe, with AC direct from one of my dedicated house lines. (You can adjust speed on a Lenco by moving the idler wheel up or down a tapered shaft driven by the motor.) Then I inserted my Walker Audio motor controller and had the Lenco set at exactly 33 with the Walker. Then some months later, I removed the Walker and was running direct from the wall socket again, but I had not re-checked the speed when I went back to house AC. The other day, I had an audiophile friend here listening with me to the Lenco, and he remarked that it sounded "slow"; he perceived a pitch problem. So we took out the KAB strobe again, and indeed, with the stylus in the groove, the Lenco was slow. I was embarrassed that I had not picked up on this problem. However, after he left, I realized that I had been bothered by the musical timing with the Lenco. Tempo seemed consistently "slow", but I heard no real problem with pitch. I had even wondered why Ella Fitzgerald had chosen a slow tempo for a Harold Arlen tune that I considered to be a good swing. The point is that what he perceived as a pitch problem was perceived by me as a timing problem. Obviously, tt speed affects both. I subsequently re-inserted the Walker and now all is well. The brain is a funny organ. He cannot sing to save his life, and I am a long time amateur jazz singer. You would think that I would have at least as good a sense of pitch as he does.

Lewm  (System | Threads | Answers | This Thread)


01-14-12   Dear halcro, your new experience with a thread driven raven ...   Solong


< Prev 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 Next >

  Post your response
Subject


Your response

No html, but you may use markup tags


Username
Members only

Password