What is more accurate , the fozgometer or the diplay of the oscilloscoop


Would like to know sure about the azimuth of the cartridge ,a visual check first ,than the result of the fozgo , just a bit differance between the left and right channel , than both channels in mono , green led and a little shiny of the red led for the right side .Than looking at the display of my techtronix dual beam oscilloscoop , both channels 
even , no differance in amplitude . Playing a piece of music , perfect ! What is true ? Can you adjust your cartridge with the fozgo with results in the description ? Ofcourse I did the calibration of the fozgo.

hansk46

This is Audio Technica's version which I suggest using with a test LP that has a track for checking azimuth like the HiFi News one which I now believe is out of print but not impossible to find if you look around the internet.

https://www.audio-technica.com/en-us/turntables/turntable-accessories-cleaning/turntable-accessories/at-vtaz1

Thanks, faustuss. The AT description says that physically perfect alignment of the stylus tip with the groove walls will guarantee equal crosstalk and perfect channel balance. Would that that was so. The dilemma of azimuth adjustment is that not all cartridges are perfectly constructed. So if you want equal crosstalk and perfect balance above all else, you have to set azimuth to some value other than 90 degrees with respect to the L and R contact patches on the stylus. The penalty for doing that is inevitably aberrant stylus wear. This is why I just set azimuth to 90 degrees and accept the possibly imperfect levels of crosstalk. 

@lewm Thank you very much for your gracious feedback and your notable accomplishments regarding your hobby. In my experience with the much more modest playback system I have, the alignment block I use (Hudson) very useful and I experience no crosstalk or channel imbalance issues with my vinyl playback that are at least audible to me.

You do have to establish other tonearm values in the set-up process like having the VTA (alignment block) and VTF somewhere in the ballpark as well your cartridge alignment. I use the Stevenson protractor supplied with my test record and then over the course of an afternoon dial in every parameter via trial and error. I might add that the test record acts as a physical platform on which to perform all of these operations since it acts as a standard to set all of your tone arm and cartridge parameters. Azimuth being among the vary last tweaks which only requires lining up the stylus with the crosshairs on the alignment block using the very small amount of play available between the interface of the head shell’s bayonet and the collar of the tonearm, of about a millimeter or so and then verifying as I said upthread using the out of phase test track on the test LP.

One of the most important aspects of all of this is to start with a cartridge that’s mass and compliance matches that of the tone arm you are using it with. Using the test tracks provided my horizontal and vertical resonance are in the range of nine and ten respectively. There are many charts available on the web that can aid in establishing what would be a good match for your tonearm.

I did upgrade the counterweight on my tonearm to the optional heavier one Luxman has available because the stock counterweight was way out at the end of the stub and my beliefs valid or not in the appropriate distribution of mass and having the counterweight closer to the gimble. 

Happy to engage you this way and too bad we don’t live nearby so we could sample each other’s systems.

I agree that the AT alignment block is a useful tool, because I am willing to accept any imperfections in crosstalk that might arise when you set azimuth at 90 degrees. I didn’t know it existed, obviously. These days I’m not changing cartridges much or at all.

"These days I’m not changing cartridges much or at all."

Who is, I just thought I’d share my experience with the tool that might benefit people who are just getting started with vinyl and forgo the unnecessary expense of acquiring a Fozgometer and achieve a verifiable level of accuracy setting azimuth.

"I agree that the AT alignment block is a useful tool, because I am willing to accept any imperfections in crosstalk that might arise when you set azimuth at 90 degrees. I didn’t know it existed, obviously."