I would like to start a thread to discuss the issues of turntable speed and to create a location to post results of speed evaluations . How accurate does turntable speed need to be? How do different drive types address the issues of speed accuracy versus speed consistency. How important are torque and platter mass? What about the motor controller? Is the Sutherland TimeLine the best way to confirm speed or can the KAB strobe disk suffice?
Here is an evolving list of links to video documents on YouTube which use the TimeLine. One shows a Victor T101 DD turntable and two others I just made with an iPhone of my SME 30/12 BD and Denon DD tables. The first two videos show similar speed results but the Victor video also shows how a high torque DD table can maintain speed through the effects of stylus drag. This is quite informative. The SME requires the speed to be adjusted with the stylus playing.
In the interest of sharing information and learning in the process, perhaps we could create a database on this site showing results of various other turntables: Dobbin's "The Beat", Wave Kinetics NVS, TechDas AFO, Technics SP10 MK2 & MK3, Saskia, Rockport, Brinkmann, TW Akustics, etc. We could then discuss how the performances are the results of specific design decisions.
List of videos in database:
Victor T101 http://www.youtube.com/watch?v=YIuwhsNGQ_c
SME 30-12 http://www.youtube.com/watch?v=Clwc_c8sVn0&feature=em-upload_owner#action=share
Denon DP-45F http://www.youtube.com/watch?v=MBEWM7WJ7yo
Technics SP10 MK2a http://www.youtube.com/watch?v=haqhT6khqZY&feature=youtube_gdata_player
Here is an evolving list of links to video documents on YouTube which use the TimeLine. One shows a Victor T101 DD turntable and two others I just made with an iPhone of my SME 30/12 BD and Denon DD tables. The first two videos show similar speed results but the Victor video also shows how a high torque DD table can maintain speed through the effects of stylus drag. This is quite informative. The SME requires the speed to be adjusted with the stylus playing.
In the interest of sharing information and learning in the process, perhaps we could create a database on this site showing results of various other turntables: Dobbin's "The Beat", Wave Kinetics NVS, TechDas AFO, Technics SP10 MK2 & MK3, Saskia, Rockport, Brinkmann, TW Akustics, etc. We could then discuss how the performances are the results of specific design decisions.
List of videos in database:
Victor T101 http://www.youtube.com/watch?v=YIuwhsNGQ_c
SME 30-12 http://www.youtube.com/watch?v=Clwc_c8sVn0&feature=em-upload_owner#action=share
Denon DP-45F http://www.youtube.com/watch?v=MBEWM7WJ7yo
Technics SP10 MK2a http://www.youtube.com/watch?v=haqhT6khqZY&feature=youtube_gdata_player
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