Turn table speed variation question
SME30/12 Here is an attempt to show the SME 30/12 with the Sutherland TimeLine. The only other two videos of the TimeLine that I've seen are Halcro's Victor and the one on the Sutherland website. |
Thank you Halcro. You are indeed correct about the SME needing to be adjusted while the stylus is tracking the LP. There is no option for a second or third arm on my table. So my result is basically the "real world" for my situation. There is no doubt the a well designed DD table like the Victor can deal with a changing load like playing three tonearms together on one LP better than the SME. But I would hardly describe the SME, or an owner, as "suffer(ing) from 'stylus drag'." I simply adjust the speed while playing an LP. In this link, you will find a discussion about the accuracy of the SME in my video: http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1320876538&&&/Turntable- speed-accuracy- Speed is slightly slow by .003% or 6/1000th of one rotation out of 73 rotations over the course of the 5 minute video. The calculations were done by Tonywinsc on 12/27/13. A close examination of your Victor video also shows a slight drift to the left of the blue tack mark over the course of the 4 minute video. You can notice this by watching the right trailing edge of the laser dash as it moves to the left. At the beginning of the video, the blue tack is basically in the center of the laser dash, but after four minutes, the dash is to the left of the blue tack and just barely touching it. This looks to be just slightly less than the 1/2" drift that the SME does, but it is hard to tell precisely. I have started a thread over on WhatsBestForum which asks for submissions of similar videos to ours in an effort to create a database of turntable speed results. So far, your Victor and my SME videos are the only two videos that I have located on YouTube to include in the database. Perhaps others will add videos to the thread and database. Here is a link: http://www.whatsbestforum.com/showthread.php?13137-Turntable- SpeedWhat-matters I'm hoping that the thread prompts a discussion of the differences between various drive types and the distinction between speed accuracy and speed stability. Clearly, your Victor excels at both. Perhaps you would like to make a video of your TW Akustics and add it to the database. |
Halcro, thanks for posting that new video. Love the music and the results are most impressive. I agree with Dover that once a certain level of speed accuracy is achieved, other issues become much more relevant. Speed CONSISTENCY, or what happens between TimeLine flashes, is one, as are the others mentioned above. I've just added a video of my old DD Denon DP-45F on my WBF thread database and results are poor. I'll shortly add a video of my friend's Technics SP10 MK2a. The Denon is not a particularly good turntable, but it was fun to bring it out of storage and have a listen. It spun lots of Led Zep back in my college days. |
Syntax, You make some good points about enjoying favorite music on low fidelity mediums. And about the importance of marketing in high end audio today. Do you remember from the Munich High End Show 2013 what the DD table and "regular running belt Turntable" were in that comparison? Would you like to add a video showing your Micro Seiki thread drive being tested with the TimeLine to the turntable database in the other thread? It would be interesting to see a document of a truly correct solution to the speed accuracy problem. You take excellent photographs, why not try to post a video? |
