Elliot, you meant to say that skating (not “antiskate”) occurs even on blank vinyl, but the magnitude and even the vector direction of the skating force are different when the stylus is tracing a groove. Nevertheless some do set AS using a blank area on an LP. But try as one might there is no single setting of AS that will precisely counter the skating force across the playing surface of an LP. Experience for me and many others is just to set AS at some low value (some say ~10% of VTF, but how do you quantify AS force?) and hope for the best. I still maintain that skating force is not causing the OP’s stylus to skip, at least not skating alone.
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I’m sure that there is a better term for this but my Googling didn’t reveal one. Analog is a secondary source for me, generally confined to albums that never made it to digital. So I got one of these 45 year old favorites from eBay and it has a common issue that I’ve had with other turntables besides my current one in the past.
When I depress the cueing for the tonearm it skips the first few measures . I have to manually and slowly lower the tonearm and even then it still does this about half the time. This only happens with certain LPs. Is it record warping?
I had my dealer check the cartridge alignment a few weeks ago.
Again I’ve tried Googling this and I just haven’t been able to come up with much except improper cartridge alignment and record warping.
Just wondering what people in this Forum, who are an amazing collection of knowledge, think
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lewm, you are correct, see my correction above .................................... I use the sound/imaging of these 3 guitar players to refine anti-skate by ear Friday Night in San Francisco, get both CD and LP all 3 ONLY Play on the last 2 tracks, listen to the audience imaging also 1st, you need the CD version, become familiar with the last two tracks, hear it with no involvement of a Turntable’s right or wrong setup 2nd, LP, side two, last two tracks, everything else correct: help refine final anti-skate adjustment
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Have fun with that. The precise proper amount of AS will be different for different LPs and certainly even for different musical passages on any single LP. So, when you set it for Friday Night at SF, it may be correct for parts of that particular LP. Since the skating force varies with the composition of the vinyl and the complexity of the musical passage and with tracking angle error (TAE) and zenith error, not to mention with VTF and stylus shape, and since the magnitude of TAE varies in a somewhat predictable manner across the LP surface, the best one can hope for is to be precisely correct at two points on the LP surface, because the changes in TAE magnitude with respect to the distance from outer to inner grooves roughly describes a parabola, any constant amount of AS will at best intersect a parabola at two moments during play. |
My only thought is that "just fine" is not quantitative. Most of us would say the same for our pivoted tonearms. Anyway, you raise an interesting question: what difference does it make tracking warps with a pivoted vs a tangential tonearm? Why would skating force and the application of AS make any difference? Answer for me is I don't know. |
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