dc no matter what you do you are up against one problem. The horizontal effective mass is much higher than the vertical effective mass.
The best way to deal with this is stick to relatively stiff cartridges like Air Tight, Koetsu, and the Ortofon Anna. Low compliance. Get a test record like the Hi Fi News then add weight to the head shell until you get a reasonable situation. You have both vertical and horizontal resonance. You want to get both between 6 and 12 Hz if you can. Keep adding weight until you get the vertical around 12 Hz the check the horizontal. It will be lower. As long as it does not drop below 6 Hz you will be fine.
This is the problem that keeps most of use well healed audiophiles in pivoted tonearms. The allure of straight line trackers is extreme but they do limit your choice of cartridges.
The best way to deal with this is stick to relatively stiff cartridges like Air Tight, Koetsu, and the Ortofon Anna. Low compliance. Get a test record like the Hi Fi News then add weight to the head shell until you get a reasonable situation. You have both vertical and horizontal resonance. You want to get both between 6 and 12 Hz if you can. Keep adding weight until you get the vertical around 12 Hz the check the horizontal. It will be lower. As long as it does not drop below 6 Hz you will be fine.
This is the problem that keeps most of use well healed audiophiles in pivoted tonearms. The allure of straight line trackers is extreme but they do limit your choice of cartridges.