Reed 2G magnetic antiskate
for the life of me, my REED 2G antiskate seems to defy me. Using the blank disc, no adjustment seems to keep the arm from skating inward....I have tried some other, audible tests of antiskate, and cant detect any change....any advice or thoughts?
For AS devices that are not simply a weight on a string, they use either a spring or magnets. Both magnetic and spring force vary with distance between the surfaces affected. So I have always wondered how they’re designed. Absent the information, it’s possible that the AS force in both cases is changing as the arm traverses the LP, because distance is changing. But it would be in a linear fashion or a mathematical fashion at least. Whereas the skating force is only partly predictable. |
jw944ts OP"Skating forces are max on the outer LP, and decrease" The dude at WAM (WallyTools) says it is a Parabola, i.e. Highest Inward Skate at the Outer Edge; Lowers as it goes near 90mm radius Increases again as it moves closer to the center It’s your fault that I watched a lot of his videos this am. I met this dude at the NY Audio Show recently. https://www.youtube.com/watch?v=5mAK8f2g0x4 when there, top right, click 'from wally tools' He sums it up, Anti-Skate, what we can do is "At Best An Approximation" ....................................... He recaps the advantages when all is done right: "will sound much more relaxed; non-mechanical sounding; Improved Imaging and Sound Staging come into better focus; overall clarity will improve; sibilancy will often decrease; chances of hearing mis-tracking will be near zero"
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Yep. It's a parabola of sorts. And if AS is virtually constant, it can be represented as a straight horizontal line on a graph of distance across the LP surface vs force (AS vs Skating on the same graph). So you can visualize that a straight line can only intersect a parabola at two points on the curve. Like a stopped clock, AS can only be precisely correct for two instances in the course of playing a record. Why I stopped fretting. |
this pattern of highest, decrease and then increase in skating force as the arm tracks across the record is why, I imagine, the magnetic, varying systems have been developed, as opposed to a constant force....but still, just an approximation at best, as every LP/cartridge/stylus will be slightly different....and, practically speaking, there is certainly a difference between physics theory and what is audibly noticeable
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