Hi Gennady, 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 oscilloscope? ~ Eric 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 > 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 > 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 > 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 > distortion. > > 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 > http://www.gennlab.com > [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). > 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, > > > > CB > > > > Corey Bailey Audio Engineering > > > > www.baileyzone.net > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com >