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- 65 posts total
You're no less an audiophile if uncertain about your ability to detect single digit decibels of difference from vertical perfection. To confirm a setting or what you hear azimuth-wise, you can measure the differences in channel output with a voltmeter and test record. Check this thread: How to measure crosstalk One place to find the Cardas test record You can compensate for channel differences in cartridge coil voltage output by getting a level set for each channel then adjust the output with your preamps L/R balance control. |
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. 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 |
- 65 posts total