Graham Phantom damping fluid level.


Bob Graham says to use enough fluid to bring the level up to the top of the square profile machined on the bearing cap. The square is only about 1/4" in length. My question is, What level works best for you in relationship to this "square" profile?

I have tried only 3 different levels of fluid in my setup (maximum level to top of square, almost no fluid at all, & to the bottom of the square) but can't seem to obtain optimum results so I'm wondering what others use, although I guess it's really cartridge dependent. Is the fluid level super sensitive? FWIW I'm using a Koetsu RSP.
frank_sm
Sirspeedy, speaking of azimuth....how do you verify "spot on" azimuth? BTW, I've been living with the fluid level just above the start of the squared off shank myself and it is much better.
Now if azimuth could be set accurately without the use of meters and test records, etc. I'd be ecstatic. What's your secret method? LOL..
Frank,no secret method!I was loaned a Wallytractor,which looks to be supremely good at this,BUT what I do personally,is use my own set of reference LP's which I know "extremely well"!!This trumps any device,for me.I started out assuming the Wally would be required,but wound up using my ears,and my own set of set-up LP's!
Best.
Those ticks are just registration marks."Very helpful",but you will do better to use your ears,with some reference LP's.Clearly audible.
Best.
I started with the level half way up the square area as per the instructions. But the sound just lacked drive ,so after reading this thread i lowered the level to the bottom of the square portion and it made a huge improvement. The problem i have is i need to lower the VTA more and i run out of down travel. I have now added the cartridge spacer supplied by Graham and this allowed me to raise the VTA . But now the sound was underdamped so i raised the level of the damping fluid about 1/16" up the squared portion. I am assuming because of the spacers extra weight more damping fluid is required to control it. This combo sounds great but still don't have much down VTA adjustment, on some lp's i am at the full down position.