Azimuth adjustment the easy way...

I actually don't have a suggestion im looking for yours. I've always done it by sight and ear but there are better methods and devices like the fozgometer. What's your favorite method for adjusting azimuth of a phono cartridge?

keep it simple, i do have a fluke multimeter but dont own an O-scope/fully outfitted tech's bench.
 
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bazelio

Active Member
Sep 27, 2016
532
59
28
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#81
Adjust+ is a nice tool. However, in all the examples I've seen (such as this one), we see the phase curves and the crosstalk curves intersect at the same azimuth setting. Great, but what to do when phase and crosstalk do NOT intersect at the same azimuth setting? Well, then I'd go for the lowest crosstalk levels of both channels. So... did I really need to see the phase curves during my azimuth adjustment or would I have been fine using the Fozgometer all along. I feel the latter is the case.
 
Jul 8, 2011
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ttsetup.com
#82
Adjust+ is a nice tool. However, in all the examples I've seen (such as this one), we see the phase curves and the crosstalk curves intersect at the same azimuth setting. Great, but what to do when phase and crosstalk do NOT intersect at the same azimuth setting? Well, then I'd go for the lowest crosstalk levels of both channels. So... did I really need to see the phase curves during my azimuth adjustment or would I have been fine using the Fozgometer all along. I feel the latter is the case.
No. Minimum phase error matters more. The Fozgometer does not measure that.
 

bazelio

Active Member
Sep 27, 2016
532
59
28
California
#85
I emailed this question to him months ago and received this response... To favor crosstalk. Further, I can find no other guidance on his website nor in the downloadable manual as to how to handle this situation. His online instructional video only shows the simplistic case where the intersections occur at the same azimuth setting.

So if you'd like to shed more light, I'd be all ears. One question would be whether you're using zenith or azimuth to reduce phase offsets. Adjust+ is an azimuth tool, while zenith adjustment is going to likewise affect phase error. Certainly you could use Adjust+ to measure phase, and then adjust it in any fashion. I've just recently started using an oscilloscope.


Email:

On, Sep 4, 2017 at 1:26 AM, Chris Feickert <chris@feickert.com> wrote:

- In most examples of Adjust+ the phase and crosstalk graphs are shown intersecting at nearly the same point. What do we do when phase and crosstalk do not intersect at the same point?​
Then you look at least at the lowest crosstalk-levels of both channels...
 
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Jul 8, 2011
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#86
Because the documentation is not currently on his website I visited an older version of the site and found this:
https://web.archive.org/web/2016082...de/Download/AP_Azimuth_Compendium_english.pdf

You will see it is quite clear what he recommends, which is consistent with what I said and what my customers hear and prefer. But as I said, suit yourself. On the other hand if you want to hire me to set up your cartridge you can look over my shoulder and learn more.
 
Oct 14, 2018
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Athens Greece
#87
Hi Brian, it seems that this pdf is not available anymore, do you still have a copy?
 
Oct 14, 2018
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Athens Greece
#89
Sorry you are right it’s the same paper that Chris had uploaded to his Dropbox.
And yes you are right, the phase matters when the phase and crosstalk are not intersecting at the same point.
In the past I have tried both with a badly manufactured cartridge and the sound was way better at the phase intersection.
 

bazelio

Active Member
Sep 27, 2016
532
59
28
California
#90
The PDF is much more helpful than his email response.

The answer for what to do when the curves intersect at different points that I was looking for is: "it depends". This is also what he indicates in the paper. Depending on the cart results, prioritizing phase is sometimes indicated. Other times optimizing for crosstalk instead of phase is indicated. Particularly when the phase curves are fairly flat.

Brian, I wasn't interested in hiring you; I was interested in an enlightening forum discussion that furthered people's knowledge of a sometimes mysterious topic.
 
Jul 8, 2011
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#91
I have seen just a few cases where the curves don't look 'normal' even after numerous readings. Relatively flat curves that intersect are the easiest to work with. Steep ones can make fine adjustment tricky. I am extremely patient and determined to get it right every time. I take personal interest in every one.
 

bazelio

Active Member
Sep 27, 2016
532
59
28
California
#92
A couple things regarding phase are still unresolved. (1) Zenith will change the phase error measurement. We should not simply consider phase during the Azimuth portion of cartridge alignment. (2) Non-linear tonearm tracking error will effect phase also. Phase error measurements will change along the arc of the stylus, and where it is worst will depend on the alignment geometry being used. Meanwhile, a short test track on a test record measures phase in a small section of the total stylus arc across a record.
 
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