Teres Audio Verus Direct Couples Motor, Anyone?

After several months with the Verus on my Micro-Seiki RX5000 I noticed a rumble started to appear a couple of weeks ago and the motor felt as though it was hunting. I took it away from the platter while running and the vibration dissapeared - so it is an issue of motor-plinth interface. I sanded down the o ring and that did make a difference; but not complete removal of vibration driving this heavy platter. I also noted that the rubber had left an invisible deposit on the platter which requires removal to decrease vibration. You can play around with the torque adjustment and this does have a discernable impact on noise level.

As it stand the Verus is an upgrade for me over belt/silk drive. But I feel that the design is still either work in progress or requires user tuning and careful set up.

I have to say that the most dynamic sound still comes from a heavy plinth Lenco and a Technics SP10 in heavy plinth and with a heavy metal turntable mat is very lively and detailed as well.

Steve

Doug:

I had a similar problem to Chuck911. My O-ring arrived with a ridge that needed to be sanded. Even with sanding the O-ring produced noticible rumble when it hit the imperfections in the rim of the platter. Perhaps with a perfectly smooth acrylic platter it's not an issue.

Ken Golden

Dougdeacon, thanks for the explanation as to why you couldn't achieve speed stability. I guess that there are slight differences in the diameters of the various Teres platters. I believe we have the same TT, the 320. I must have been lucky with mine.

The Verus controller adjustment is in 0.16% steps. This means that the worst case speed error will be 0.08%. On average the error will end up being about 0.04%. Doug had a very early controller that used adjustment steps that were much larger. All of the controllers have been upgraded to use the finer adjustment steps.

A continuously variable adjustment scheme would be less accurate because analog circuits drift. You can get the speed spot on but does not stay that way. With the Verus controller you may end up with a small speed error, but it will stay exactly the same and does not need to be re-adjusted. It would be very difficult to get an analog circuit to remain within 0.04% over a long period of time.

Chris,

Thanks for the update. Glad to hear you made that change.

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