DaVinci tonearm and azymuth

Post created for clarification only. I have no interest in debating how to set azimuth:

As for the Freickert-software... it implies for correct function in azimuth-adjustment mode, that both coils of a given cartridge do have 100% identical output.
If this is not the case - which you can count on in 99,99999 % of all cartridges - it will help you little to adjust azimuth. As it compares output of both channels to give identical readings.
You need to know the exact output of each coil before using this tool.
Hard to get......

Not true. The software does not work this way. It uses a transfer function based on the output of the main channel relative to the crosstalk channel (20*log(Vx/Vy)). Your assumption of how the software works is incorrect. It does true azimuth calculations. If there is a 1.7 dB difference in channel balance the software does not care as it does not rely on matching channel balance.

Dre

Good post, Dre_j. Quite a bit of information about the Feickert software azimuth measurement, including the phase measurements as well, can be seen in the Azimuth compendium on his website.

Andre,
This is interesting: does this function average over the frequency response, or does it work for specific frequencies set beforehand?
I've done experiments with a voltmeter (like many before me) to measure crosstalk and noticed that, for a given azimuth position, the crosstalk can be completely different depending on the frequency: for example, if the azimuth position was adjusted as well as possible at 1KHz by measuring crosstalk (same method as the one given above), it would be off at 100 Hz, and also off at 8KHz--in fact the measurements were opposite at those extreme frequencies... I've used my ears ever since....
Joel

Well Dre, the transfer function gives only correct result relative to the azimuth (= correct position of the stylus towards the grooved wall for both channels) if factor x (here: output voltage) is known and thus for each channel.
Otherwise the calculation is always a relative one (which it is here).

Dear Jtimothya, to determine the correct output for each channel you do not use a test record. You need the pure output of the coil and the best way (and most precise) to obtain that basic figure is to get it WITHOUT a groove.
It works this way: get a Nagaoka or similar oscillating stylus cleaner. This gives a 400 hz or similar impulse on the cartridge - to both channels and independent of position of stylus. This has to be measured with a precise micro-ohm-meter.
You will get perfect and stylus position independent readings for the raw output of each coil.
Simple yet effective.
If we want a figure for factor x1 (coil output) and factor x in action is a function of factor y (position of stylus polished area towards grooved wall) or factor z (relative crosstalk to other channel - which here would mean x2....) - then I would look for a way to obtain factor x1 (and x2...) without other variables depending on.
Best of all .... - it works.
Cheers,
D.

Dertonarm,

I believe I stated that I'm not going to debate setting azimuth. I clearly stated the software does not work the way you described and your subsequent post seems to acknowledge that your previous assumption about the software functionality was incorrect.

The point of my post was for clarification only.

Dre