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How much difference if the tonearm is mounted 5mm

Closer.
Hi Experts,
It is for a Pole Star UNV-2 Tonearm. I would like to know if there is any affect in sound if I mount the arm 5mm closer than specification. It is on the VPI Aries 2.
For the Pole Star:
Distance between spindle and pivot is 212mm.
Between stylus and pivot is 228mm. Overhang 16mm.
Whole length 305mm.
Thanks,
Calvin
dangcaonguyen
stringreen's avatar
stringreen
6,468 posts
 
If you mount the arm the 4mm closer I would suppose that it would be fine...(Harry said he or anyone else can not detect a bit off)...however, as for ME....I would want it absolutely correct. ....just a question....why would you want to exchange arms...VPI makes a very good arm...the 3D is wonderful.
dangcaonguyen OP
206 posts
 
Hi Stringreen,
I am adding a second arm on my turntable. My turntable came with the JMW 10, so the armbase does not accomodate with the new arm wand. I have to change the whole set to the 3D, a bit expensive right now.
As fir the new arm, it is shorter than spec. Hence the question.
Thanks,
Calvin
bifwynne
2,206 posts
 
Calvin ... did you try a Baerwald (sp) protractor? Just curious if you still come up short.
dangcaonguyen OP
206 posts
 
Hi Bifwynne,
Yes, that was the one I use to set up the cartridge at first. I also checked the leveling of my table and armboard. As of right now, i beleive that the arm is deffected. It was made shorter than the specs by mistake.
Thanks,
Calvin
sarcher30
596 posts
 
Calvin, thanks for the clarification. It sounds like you are correct about the arm being off spec. The only other logical conclusion is that the Feickert protractor is off spec. If the Feickert works fine on other arms then that would rule it out as a suspect.
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