VPI dual belt update....adding a second belt to the VPI scout made the following changes in sound and platter speed stability.
1. The sound stage image becomes more focused.
2. There is an improvement in anti skating. That is, when the tonearm tested via test record (omni disc)the cartriage tracks the record for a longer period of time before the left or right channel breaks up.
3. The bass improves...that is it becomes more solid.
4. The pitch of the turntable changes...That is, I had to decrease the frequency of the SDS from 60.60 hz to 60.30 hz. in order for the platter rotate at 33.33 rpm.