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Using the VPI threaded clamp and azimuth change

I am using the VPI threaded delrin clamp that came with my classic 1. It is stated that the threaded clamp is to be used in conjunction with the rubber spindle washer. When it is used this way, it seems like it would negatively affect the azimuth setting. When you screw down the clamp and tighten it against the rubber washer, it does force the outer edge of the LP downward to touch the platter. This causes the LP to have a slight downward dish appearance. When I have set my azimuth on a level surface, does this not cause the azimuth to be out of alignment? Do I need to set my azimuth canted a bit to the outside of the platter to compensate for this effect? How are you VPI users adjusting for this?
andyprice44

Showing 1 response by redglobe

redglobe
223 posts
 
Andy, The material of the washer is not critical. You can obtain the correct height by purchasing brass shim stock at a hobby store.

The packs come with a variety of thickness and can be cut with stainless steel scissors. For the hole in the center, sandwich the shim stock between 2 pieces of wood (this minimizes the likelihood of a ragged hole)and drill the spindle hole.

The tighter you clamp the record to the platter, the better (energy from the stylus is transferred from the vinyl to the platter rather than reverberating back to the stylus).
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