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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
syntax's avatar
syntax
2,193 posts
 
... far I use only setup tool from Graham which seems to work ok but I am not really overwhelm by the result

Of course it sounds awful because it is wrong, the alignment flip is calculated for the short Arm. But don't worry, that way it was in use at CES and all visitors/reviewers were floored :-)
Go for PtoS with 295,6mm and use a 12" Alignment System, Dennesen or similar, then you are spot on
suteetat
435 posts
 
Sean, thanks for the tip regarding Reed mint protractor and Graham. I did not realize that both has the same 295.6 PtS and 308.8 effective lenght. I checked briefly with Mint and was surprise as to the difference between Graham's own tool and Mint. I will try to set up carefully with Mint tonight and see. I also have Clearaudio protractor (as I understand, it is the same as Dennesen, I assume with IEC-standard R min 60.325mm, I still have not figure out this whole IEC standard r min thing and the manual is only in German). However, there seems to be no easy way to place the protractor accurately with the set PtS. It seems that Clearaudio and Mint are closer to each other than Graham's by quite a bit.
Ag insider logo xs@2x
unoear
141 posts
 
Yep... If anyone has a dennesen for sale, I am game.
suteetat
435 posts
 
OK, now I am very very impressed with what Graham can do. Very different sounding from my Reed 3Q. With Mint protractor with PtS 295.6 mm, effective lenght 308.8, I have no proble mounting Air Tight PC-1 Supreme at all.
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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