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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 5 responses by suteetat

suteetat
435 posts
 
I just got Graham 12" last month and there is no spec available. The manual is still for 9/10 inch arm only. It only said to look at addendum sheet for 12 inch spec but there is no addendum sheet anywhere in the box that I could find. So far I use only setup tool from Graham which seems to work ok but I am not really overwhelm by the result. I am thinking of trying mint protractor since it seems to really help both JWM 10.5 and Reed 3Q significantly.
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.
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.
suteetat
435 posts
 
Geoch, thanks for the info. I thought I read elsewhere on A'gon and saw a few other places that mentioned that Clearaudio protractor is the same as Dennesen, oh well...
suteetat
435 posts
 
Look like I have to burrow my friend's Dennesen and try it. I initially bought Clearaudio protractor mainly for my FR64s as I understand that FR 64s works best with Denneson. Oh well....at least I do have an access to one anyhow.
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