2. analog
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Azimuth observations and importance

After adjusting azimuth with a Fozgometer loaned to me, the following is what I observed. Individually, these changes were subtle although noticeable. The combined effect however, was significant to the overall presentation.

Imaging improved.

Vocals became more focused, not as big and wide as before.

Instruments more detailed with greater air. Location is more precise.

Tighter bass versus the slightly lingering bass notes previously.

Better top to bottom detail and clarity.

I never realized how important correct azimuth adjustment is and this exercise was quite a learning experience for me. Thinking I was correctly adjusting azimuth by visually setting the headshell as level as possible was a reasonable but flawed attempt.

I have found at least two stylus issues that if present will affect azimuth and sound.

1) A straight cantilever that is twisted left or right changes the attitude of the diamond and its relationship to the groove. By twisted I mean the cantilever has rotated on its own axis. This one is very difficult to see without appropriate magnification.

2) A cantilever that is canted to the left or right a degree or more but is still straight, not bent. It points left or right probably because it was not centered correctly when the cantilever was installed. It also changes the attitude of the diamond.

What is probably basic and common knowledge to everyone here is something I have just been enlightened about after giving it very little thought. I am now convinced that accurate azimuth is a required step in the turntable set up process and I will be giving full attention to this part of the equation.

No more guesswork and eyeballing which I am embarrassed to say was the norm. Doug
128x128dougolsen
lewm
13,039 posts
 
Dear Doug, the OP asked how to do it with a multimeter. And that;s the question I tried to answer. Such devices do not have filters, true, but I was just trying to describe how one could do it with HIS tools, not the best way possible. Also, it is not far-fetched to assume that surface noise in the unmodulated groove wall would be about the same for the two bands on the test LP needed to make the determination and would hence cancel each other out, give or take a db here or there. The result would be a falsely high idea of the amount of crosstalk but it would still permit adjustment to obtain minima.

In reality, to adjust azimuth I have only ever used my Signet Cartridge Analyzer and my scope occasionally plugged into it. (It has a scope output.) I am not really familiar with these new fangled devices made by Wally, Dr. Feickert, etc. Do they utilize the amplifier outputs? Do you personally do it that way, notwithstanding that you do it by ear as well? After all the brouhaha around azimuth here and on the Grandezza thread, it is interesting for me to learn how those who have the luxury of azimuth adjustment actually do the adjusting.
dougdeacon
3,338 posts
 
Agreed, Lew, it can certainly be done without filters. It's just alot easier with them, since the output readings don't jump around so much.

I answered your followup questions in my preceding posts (though only for myself, obviously).
dan_ed
2,451 posts
 
Using a DMM that has hold capability can also help when doing this without filters. You are most likely seeing the noise peaks, but it is still ok enough to find a good starting point with the meter method. But I have found this to be only a crutch. It does get in the park but tuning by ear is what nails it, IME.
I'm sure Feikert's tools do an excellent job, but for most of us hobbyists the cost isn't justifiable.
stltrains
845 posts
 
Theres all types of tools that can get you close but theres no substitute for playing music and getting/finding that final super spot. Its like getting VTA right the stage opens up and the sounds become open and theres air between them. I believe we are so much into gadgets that we forgot we have the best tools and there free right in our body our brain and ears.

Take the time and effort get it close by leveling or measurement and then play a good mono record and when the stage opens up and the music sounds wide and deep you have it and your ears will tell you so. Now play a well recorded stereo record and be amazed. Its not hard it just takes time and the return for your effort is priceless.

Take it from someone who believed in looking at measurements with there eyes instead of listening to sounds with my ears when doing critical adjustments necessary with such a small signal/voltage delivered by our cartridges.
thuchan
1,009 posts
 
Stltrains you are so right but the world looks for simple solutions and when the marketing campaign starts knowledge or belief in its own virtues is no more the choice. This product is triggered as the overall solution to the vinyl challenges. God beware me! You need to have a closer look at the sales efforts currently going on and you will join me in saying- this product is good for the ones believing in the product...
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