Has anyone had trouble with speed on their tt


I was having trouble with speed stability on a very expensive dual DC motor top of the line system of a well known brand from England. It was a terrible fight for years, I would get some good days and then the temperamental thing would drift or even radically switch speeds ending my listening session. I now have the perfect system and wondered if we could discuss this for other audio enthusiasts' sake.
zenbret

I just want to know what was the OP's turntable, described as "a very expensive dual DC motor top of the line system of a well known brand from England." Since it's a two motor design, it would have to be a belt drive turntable but I just can't think of a English brand that uses two motors. I know AudioNote UK uses 3 AC motors for their top of the line table. But seems like many commenters are inferring Direct Drive turntable, buzzwords like DC motor, servo, hunting, etc... Are we talking about DC motor or DD turntable here? I'm confused.

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Moonglum, you are correct, except you dismiss the possibility of a turntable that can pass the Timeline test without servo controls and still involve the listener in the performance.
Moonglum, You are the one with the agenda. It is possible for turntable to sound great and pass the Timeline test. It is also possible for a turntable to sound awful (or at least less good than some other tt that fails Timeline) and yet pass the Timeline test. The Timeline can only tell about one vital but not exclusive aspect of tt performance; it cannot tell us about resonance control and other more subtle aspects of performance that affect sound; those Timeline guys know that as well as you. However, the main function of the tt is to spin the LP at exact speed at all times and against any frictional drag, so as to re-create the X-axis of music. There's no getting around that. Whether the Timeline test is the sine qua non of that aspect of tt performance, or not, is another matter.

And by the way, I don't think jitter is the digital equivalent of speed inaccuracy in a tt, but you raise an interesting question in that regard.
Thanks Mosin but I’m not dismissing any turntable. If users are happy with their Timeline compliant TT that’s great news.
You’ve indirectly summed up my feelings : Everyone should be happy with their TT choice because they chose it. (Timeline notwithstanding).
Let's just say I'm encouraging a little less automatic blanket demonisation of the turntable designing community, which seems to have been an unfortunate consequence of the Timeline Thread.
These issues appear to be taking over the OP’s Thread when it is clear his past/present problems go beyond simple +/-0.02% deviations between turntables or regular and repeatable behaviour of a fully functional power supply?

As an aside, the Rockport Treatise on turntable design was written over a decade ago (and it is wonderful reading). It’s likely that others, apart from us, have read it.
It would be foolish to think that being able to comprehensively describe design problems automatically implies the power to solve all of those problems.
I believe Rockport had a good stab at it (although you'd be struggling to get one now unless you are a millionaire). The new kid on the block – The Beat – is already up to Mk IV/V(?), so it isn’t THAT easy???

Marketing is a powerful tool and Timelines must be flying off the shelves at the moment.
At the end of the day it is just a strobe. An accurate one but a strobe nevertheless. My strobe gets used once then sits in a cupboard for 3 years. (Ok the Timeline is also a record weight but clamps & weights are not always desirable in all circumstances. Indeed, the designer of The Beat claims he tested most of them and is of the opinion that if the turntable design needs one then it is fundamentally flawed(!!)
Granted, that’s only one opinion - two if you include mine – because I’ve always disfavoured them on the grounds that they “stressed the vinyl”, perhaps not quite the same reason/s as his :)
Of course, the Timeline is removable and storable in the cupboard for 3 years. :)

Digital has a perfect timebase but we prefer the imperfect. That’s my core message. (Timelined or not, still crude)
Never thought I’d see the day I’d be using Digital to strengthen an analogue point. :) :)
Nice to see it’s good for something ;) 

Finally, I think some of my Timeline remarks, although humorously intended, were slightly inflammatory, so I owe the lads an apology if the comments caused them any grief.
(In fact I thought the reactions exceptionally kind and polite, all things considered. Hope I will be welcomed back!
All the best....