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RE: I am not sure of your meaning..

Posted by kentaja (M) on December 18, 2016 at 11:38:45

In Reply to: RE: I am not sure of your meaning.. posted by Lew on December 18, 2016 at 10:45:49:

I have not done any power measurements of the Lenco motor. I am sure the 25W Road Runner will run the Lenco motor just fine. And for the record I have not actually tried the RR 25W unit. My experience is with similar small wattage motor controllers.

The small wattage controllers that I have tried, i.e. 25-30W, did improve the performance of the Lenco in several areas. Better resolution, focus, less grain to the sound versus running the motor directly off the AC.

Where they fall apart for me is they reduce the qualities that make me want an idler in the first place. There is a reduction in drive, slam. Everything seems to close in on itself. Nothing terrible by any means but a step in the wrong direction IMO.

Perhaps this is the nature of the Lenco motor since as I understand it is not a true AC synchronous motor. I have a restored Garrard 401 from Grail Audio arriving this week so I can make motor controller evaluations with this machine as well.

I am still intrigued by the RR supply because of its ability to apply a feedback loop in conjunction with the tach. In this regard it is similar to the old Japanese direct drive but will not achieve the true quartz-lock performance of the better Japanese DD tables.

At the moment I am running the Lenco off a 500VA isolation transformer. This seems to give the improvement of the motor controllers, improved resolution, focus, less grain without screwing up what I like about idlers.

While RR designed the 25W unit for idlers I think there focus as a company has been more geared around belt drives and with these type tables I have no doubt it is a nice unit. The 25W unit may work very well with idlers including the Lenco. Skeptical given its limited output but no more than they cost willing to give it a try.

I plan on buying the RR 25W supply before they are all gone. If I don't like it on the Lenco, or Garrard, I can always try it on my Linn or sell it. Once the new units are gone no doubt there will be high demand for used unit.

I have a Monarchy supply on the way. This unit is rated at 100W. I have heard it on a friends Garrard 401 and liked the results. But you never know until you have it in your own system.

Then of course there are a certain number of folks that think any motor controller is a step in the wrong direction. I am thinking Linn as an example. With the introduction of the Valhalla supply there have been some that think the table sounds better with the older Basic supply. I have never tried my Linn this way just the Valhalla, Lingo II supplies. But I still have a 60Hz motor and may install this in the Linn and run it off the AC line.

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