Do you see a meaningful difference between the A-S required for the inner
vs the outer grooves when adjusting A-S with your test disc and
On Tue, Dec 22, 2020 at 2:51 PM Gennady Lyskin <[log in to unmask]> wrote:
> Hi Corey,
> The goal for A-S adjustments is to set equal DINAMIC pressure of stylus
> 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
> walls simultaneously.
> 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
> 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.
> Happy Holidays,
> Best regards,
> Gennady Lyskin
> G e n n L a b
> [log in to unmask]
> Tel: +64 21 238 3056
> New Zealand
> ----- 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).
> > 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
> > 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
> > 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
> > tools? Comments? Opinions?
> > Happy Holidays,
> > CB
> > Corey Bailey Audio Engineering
> > www.baileyzone.net
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