The goal for A-S adjustments is to set equal DINAMIC pressure of stylus tip
on both walls of the grove.
I’m using test LPs from CBS Labs and the other brands.
Some of them contain a few tracks with gradually increasing 300 or 315 Hz
signal from high but still usable lateral +11 dB ref. 1.12x e-3 cm peak
amplitude to super high unrealistic lateral cut level of +18 dB ref.
I adjust A-S force to the point when the stylus tip looses contact with both
2-CH oscilloscope connected to the L and R OUTPUT terminals of the preamp
must show symmetrical distortion of the sine wave peak in both channels.
It is always different from the flat portion of the disk method and way away
from the A-S scale.
My Benz Micro Glider SL MC cart on the Technics SL-1200MK2-XAL TT can pass
+18 dB with 2.0 g vertical force with very low visible and audible
The other carts like Stanton, Ortofon, Audio Tec. etc cannot pass even +14
dB test with recommended Vertical Force.
If you interested, please have a look at my website transfer LPs page what
test LPs I use.
G e n n L a b
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Tel: +64 21 238 3056
----- Original Message -----
From: "Corey Bailey" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, December 23, 2020 10:08 AM
Subject: [ARSCLIST] Adjusting Anti-Skate
> Hi All,
> OK, I’m going to open up a can of worms here…………………
> Most turntables have an anti-skate adjustment. Some do not & some have a
> counterweight suspended from a thread (which, is surprisingly accurate). I
> learned years ago that the anti-skate (A-S) adjustment should be 9 to 11 %
> of the vertical tracking force (VTF).
> Once the turntable is set up & with everything properly adjusted, my
> method has been to adjust the A-S by playing a blank disc (usually a
> lacquer) & set the A-S so that the tonearm tracks steadily in the middle
> of the disc. A slight drift towards the center is desirable but generally
> difficult to achieve. When digital recording became the norm, I began
> visually & audibly checking the fades for all of the material being
> transferred from disc to make sure the modulation is equal (unless it is
> intended otherwise). When I purchased my 1^st set of AES Coarse Groove
> Calibration discs, (AES-S001-064) I was pleasantly surprised to find a
> generous band of no modulation in the center of the discs although there
> is no mention that it is to be used for A-S adjustment.
> I recently read that an easy way to adjust A-S is to adjust it so that the
> tone arm stays steady in the dead wax area of the record to be played. I
> tried this & found that when the tone arm is placed in the center of a
> blank disc, the tone arm travels to the outside of the disc.
> So, what’s the correct adjustment? I thought I’d ask the experts on this
> forum: How do you adjust anti-skate? Do you use sophisticated measurement
> tools? Comments? Opinions?
> Happy Holidays,
> Corey Bailey Audio Engineering
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