on Linn's tonearms (and most others) anti-skating compensation (AS) should be set to the same value as vertical tracking force (VTF) as a starting point. Linn don't go any further than this in their description of AS optimisation, however, some fine tuning can generally make an appreciable difference. The purpose of all this, by the way, is to achieve equal tracking of both sides (channels) of the groove wall.
The most widely accepted technique for fine tuning AS is to use your own hearing. Using a record that has a variety of instruments and signal levels (a test record can be helpful), listen for poor sound quality/tracking in one channel vs. the other. If certain instruments seem to breakup occasionally in the left channel for example, then a slight decrease in AS is required. Conversely, if you detect problems in the right channel, then slightly more AS is needed. Generally the best setting is not too far from the recommended amount if your platter is properly level.
I have noticed over the years that the best AS setting usually corresponds with the cantilever remaining straight inline with the cartridge body when viewed from the front during play. This assumes that your platter is perfectly level, your cartridge is properly aligned, and your stylus is not bent or otherwise out of close alignment with the cartridge body when not under load.
You will find that when viewed from the front, the cantilever will appear to point inwards toward record centre when you increase AS and point outwards when you decrease AS. Adjusting AS until the cantilever appears centre aligned generally results in the best tracking of both channels.
Craig
