Direct Drive

For vintage DD tables I look no further that Victor, better known to most as JVC.

My TT71 motor drive unit is a beautifully crafted and precise operating DD table that uses a DC motor. It's a 12 pole, 24 slot DC brushless motor with a frequency detection circuit that uses a 180 slot frequency generator yoke with a magnetic disc and a printed circuit board with 180 coils printed on it. Needless to say, speed is very accurate and wow and flutter is very low.

Most folks don't realize that Victor invented the modern quartz locked direct drive motor system. Victor was a engineering company that shifted it's focus from audio to video in later years and became leaders in that field as well. Victor supplied motor drives to other companies as well, Micro Seiki being one of them.

BillWojo

@dover 

"Any of the vintage use DD's use 3 phase motors ?"

This caused me to try to think for a moment of one that isn't at least three phase, and I'm coming up empty. 

A local dealer dealer just mentioned the Fender x MoFi PrecisionDeck Limited Edition Turntable is in stock.

For looks alone Fender's iconic Sunburst is truly amazing.

Differences between turntables often comes down to the cartridge.

In this case it is the Mofi MasterTracker Cartridge, which is almost 25% of the total cost.

 

“Differences between turntables often comes down to the cartridge.”  The same cartridge will sound different in a different tonearm on a different turntable.  The same turntable will sound different with a different tonearm and cartridge.  These variables are not trivial. And your general statement leaves out the tonearm entirely.

@pedroeb

Three phase is easily obtained by driving a 3 phase motor with a 1 phase, and tapping the 3 phase power inputs. Viola, 3 phase power. But 3 phase is more complicated than it looks, and so is better left alone.

But it’s pretty much academic if you have a two phase motor with a quadrature motor controller, that is, producing sine and cosine. Then run the motor with sine and whatever mixture of sine and cosine gives the smoothest results. Pretty much the same performance as 3 phase with less grief.

And must agree with Lew on this. Turntable is most important, tonearm next, cartridge last. IMO. Anyway, you can’t get close to top performance from, say, a 10K cartridge with anything less than a first class TT and tonearm, say 50K or preferably more. My own tonearm adjusts azimuth to less than 1 minute of arc, and just this evening I found myself changing over a +/- 2 minute range with clearly audible results. Not many arms can do this, and unless they can, cartridge performance suffers.