VPI Scout

The Walker Precision Motor Controller. Costs as much as the Scout, but well worth it. I may upgrade tables, but I'm willing to bet the Walker is in for the duration.

Yes - 33.33 and 45 only. Any further increments will require an SDS or similar motor controller

Here goes: there are 7 grooves on the platter. At 33 rpm the belt seems to seek it's own level on the platter grooves. Each of the two pulleys have four grooves each. With my Walker Motor Controller engaged, the belt rides on the lowest groove on the 33 pulley. Without the motor controller engaged it rides there as well. I have not noticed any changes in speed in moving the belt up or down the pulley shaft that are discernable without the use of a strobe and mat such as that from KAB. I am confident that the Walker is providing me with a stable 60 cycle sine wave at 33.33 rpm. So, in my limited experience with the Scout there MAY be tiny adjustments possible via relocating the belt on the pulley shaft, but the belt on my table seems to want to ride on the same place on the platter regardless of where it is on the pulley. I have not conducted measurements with a stobe to verify whether or not these changes result in speed differences. Without the motor controller, my ears really can't tell a difference. I will say however, with the motor controller in the chain, the audible differences in the music is a profound change for the better. I think the same can be said for the SDS as well. A worthwhile investment in my estimation if you are concerned with being able to make small changes in the speed your platter is running at. The SDS is very accomodating in this regard.