2. analog
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VPI Speed Problem

I have a VPI Super Scoutmaster with SDS. Fabulous sound, had it for about a year. I moved to a new place about 5 months ago and have had it set up and working well for about 3 months in the new location.

Recently, I thought the first song on some album sides sounded slow, but as the album played a minute or two, all sounded right again. Now, everything sounds slow all the time, both 33's and 45's. I tried bypassing the SDS, though there is no speed setting on the motor assembly, so I don't know if that should sound right, but it sounds very slow and muddy as well.

Any thoughts on what might be wrong or how to troubleshoot? Any insight would be appreciated.
kthomas
tfkaudio
591 posts
 
I would check the speed with a strobe. I live in Chicago and I need to adjust the speed using the SDS during the winter because the table runs slower.

Also, make sure the junction box isn't contacting the platter.

And, make sure the pully on the motor is fastened tight. Do you have the 300 rpm motor or the dual motor flywheel? Or the rim drive?

And, make sure the platter bearing is lubricated with white lithium grease.

Have I missed anything?

Cheers.
tfkaudio
591 posts
 
A clarification... it's the outer ring clamp that gets extremely close to the junction box, not the platter itself. During your move, if the junction box moved even a little, it might now be rubbing against the outer ring clamp. You just need to loosen it and move it a little bit back.

Cheers.
chadnliz
3,736 posts
 
Belt drive cheapo?
Ever hear the term "empty cans make the most noise"?
jallen
502 posts
 
Very likely the pulley has come loose a bit. just use an allen wrench and tighten it and the speed should be accurate again. Also, the belt tension may be too loose. The platter should stop after about a half turn or so. Jallen
oregon
822 posts
 
Is that sheriff johnbrown?
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