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Graham Phantom II 12" - dimensions and overhang

Hello guys,

I come from Europe and recently purchased Graham Phantom II tonearm with 12" armwand.I was missing specs for 12" armwand (in manual are specs for 9" and 10"),so I emailed to Bob Graham and asked him for specs for 12" version. The answer was,that 12" version should be adjusted same as SME V 12". Bob sent me document with SME dimensions as well.

So regarding this document specs are Leff 308,8, overhang 13,2, mounting distance ( Pivot-Spindle) 295,6.
To adjust mounting distance is easy using any quality protractor. I used Acoustic Solid.

http://www.acoustic-solid.de/html/schablone.html

So with mounting distance adjusted to 295,6,here comes the thing.
I should set overhang to 13,2 regarding to specs for SME V 12",but simply
elko

Showing 3 responses by sarcher30

sarcher30
596 posts
 
If you use an arc protractor like the Mint LP you will get the correct offset angle. As long as the arc protractor is designed for correct P2S for the arm you're using and you follow the alignment for zenith you will have the ideal offset angle. Just ignore the offset angle on the Graham 12" armwand as it is not correct.

Sean
sarcher30
596 posts
 
Suteetat, If your Reed 3Q is the 12" version then the Mint LP you have for that should work for the Graham 12" as well because they are the same P2S distance 295.6 mm.

Sean
sarcher30
596 posts
 
Suteetat, good to hear. I was not sure if the effective length was exactly the same but as long as you have room in the headshell it doesn't matter.

I'm not sure why Graham does not provide a proper alignment protractor with his 10" and 12" arms but he should.
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