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

Showing 5 responses by tshulba

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.
That is strange yours was not supplied with the tonearm. I would think if you contact Graham you could probably get one. I prefer the sound of the tonearm with the spacer installed , it seems to be cleaner sounding and i can hear more detail in the music. I wish i could get more down VTA travel i am at my limit on some lp's. If you read the Stereophile review they talk about the spacer in the review.
Frank i found that if i lowered the tracking force just above the distortion point i get great highs. Then i adjust the damping level and it all seems to fall into place, great clean top end and monsterous bass.If i go to low on the damping fluid it becomes thin sounding .
Sirspeedy- i left Graham a message about the cartridge spacer early last week and i have received no response so far. I hear he is having some troubles hope things work out ok for him.
Mine was manufactured in 2006 s/n 3137 so that is why it came with the spacer. I prefer the sound with the spacer installed.