Turntable speed accuracy

Albert
I'm guessing either the laser mark with the platter having slowed would take longer to traverse a section of wall (unlikely to have slowed enough to make a visible difference IMHO) or perhaps a high frequency flutter is causing the mark to appear longer.... very interesting anyway.

Dover
I should add that I have so far only used belt drive and a Garrad idler(which to me sounds less speed stable than my belt drive...something wrong with it???).
I'm starting to buy the argument for dd though so I may well travel down that path soon.

Halcro - welcome back. Australian politics has been very entertaining of late. Are you putting your hat in for Foreign Minister

Ha ha.....thanks Dover.
I don't think the Foreign Minister NOR Prime Minister will somehow pass the Timeline test??!
Really looking forward to your tests with the Timeline?

Hi Albert,
I have seen exactly that phenomenon with the Timeline on the Raven AC-2 driven by a slipping thread.
I know exactly what is happening and it is borne out by the laser mark AND the sound at the very same time.
The Timeline is its own reward :^)

I sent the amateurish YouTube video of my TT-101 with the Timeline to Ron Sutherland who was so impressed....he said he was going to include a link on his new web site.
Ahhh....fame at last :^)

Halcro,

I assumed the same thing you did and heard the result as reduced dynamics and slurring. Funny you detected the same phenomenon.

I agree, Ron has a winner, http://www.positive-feedback.com/Issue58/awards2011.htm

Scroll almost to the bottom.

I gave Ron Product of The Year for the Timeline. I'm pretty sure I stirred up some of this when I began posting results of my own tests last year.

The Timeline may not be a "perfect" product but it sure reveals errors that a printed disc and strobe miss. I would go so far as to suggest the Timeline supports things we hear and previously could not prove.