VPI Speed Controller


Hi, hope you are all well. I would like to hear from VPI owners about speed controllers. I have a very old SDS and wonder if the newer ADS is much better. I have the Prime Sig. with the Fatboy arm and Soundsmith The Voice cart, Pass XP25 phono, Luxman L509X, and ML ESL11As. Sounds great except for solo piano which does not sound good at all. I heard that speed stability could be the culprit and wonder if the old controller is the cause. Thanks for any input,Joe.
joeyfed55
You say you have a "very old SDS."  Some VERY old VPI speed controllers are not SDSs. So what do you have exactly?

Were it up to me I would prefer an old SDS to the more recent ADS units.

The best controller you can buy for the VPI is sold by SOTA and would include a new motor as well as the Roadrunner for continuous speed measurement.

Other things that you can do to help speed stability is add a heavy peripheral weight as was said, or get the VPI motor-flywheel combo.  

Everything will make a difference.
I had the very old PLC (Power Line Conditioner, the one with the thumb wheel dials) with my TNT-1.
I've upgraded that twice in the last 30 years - first to the PLC with the rotary dials and then to the SDS with the push button adjustment.
If you actually have an old PLC the SDS will be a very worthwhile improvement.
Still have my old TNT with various VPI upgrades. I sold off my Graham Phantom arm and put on a Grace G-1040 arm that I bought for about $150 in 1982. It actually sounds really good!
http://www.tobespages.info/TNT_grace1040._%20small.jpg