What is more accurate , the fozgometer or the diplay of the oscilloscoop
While a fozgometer can get you in the ball park you still benefit from fine tuning by ear - the method I prefer and the rationale for it is detailed here http://www.durand-tonearms.com/Support/Support/azimuth.html |
@mb1audio02 -- unfortunately you’re plain wrong when it comes to measuring azimuth using a test tone and whatever instruments you choose. As Joel notes in the piece I linked to crosstalk is not consistent with frequency and unless you have the time and patience to measure at multiple frequencies setting by ear will give the best results There have been other methods suggested in the past. A particularly popular one was offered byVictor Khomenko in the late 90s and seems to have been widely accepted since. In our experiments, we’ve found that, while this method works very well at a given frequency (most people seem to use a 1 KHz tone for this purpose), it is unfortunately not consistent throughout the frequency range found in music. We discovered that after adjusting the azimuth for perfect balance at 1 KHz with this method, voltage readings with a 100 Hz and a 8 KHz tone give widely different results; one channel would be greatly emphasized at the lower frequency, and the other one at the higher frequency. So while the method is theoretically sound, it fails to address the reality of the musical signal, which is far more complex than a single sine tone. So, until a better and more reliable method is established, our ears will do nicely... and they’re free... ps for measuring timber I’ve found a tape measure works quite well 😏 , measuring timbre requires a depth of musical experience and a good ear, no electronics can help here |
@stringreen -- not sure why the method for making the azimuth adjustment (ear of meter) makes any difference to how fiddly it is to do. Even with a fozgometer you're going to need to make azimuth changes and also go above and below the "correct" setting to get there. Maybe it's just a case of some arms are harder to adjust than others? Anyway as to the question of ear vs measure I own a foz and use it to get the azimuth in the ballpark and then fine tune by ear This stuff really matters, and the level/mirror method falls short for those cartridges (like the majority of Air Tights ime) that are not mounted that accurately. At the last Newport show 2 out of 3 AirTights (including a magnum opus) had to be mounted with a visible cant to get the azimuth right -- my PC-1 is no exception, it sounds best lilting 10-15 degrees off to the right |
lewm -- turns out I’m lousy at estimating angles in my head, taking a quick measurement (using my iphone level app) it’s clear that the tilt I was seeing on my headshell is more of 2-3 degrees at most -- odd how small deviations from horizontal seem much larger than the same deviations from vertical -- must be something to do with how we are wired to examine the horizon? Anyway as what we are trying to do is get the stylus exactly vertical and given how probably difficult it is to be sure you’ve mounted a tiny bit of diamond into a shank of boron/aluminium at exactly the right angle it’s not that surprising that even $15K cartridges can be off. I do agree however that it’s disconcerting to see and part of the reason I’ve recently moved away from this brand of cartridge |
@lewm no one is suggesting that the cantilever is off, the issue is with the stylus. Here's a clear explanation of the difference from Mikey (paragraph 8) http://www.analogplanet.com/content/crazy-little-thing-called-azimuth-part-1#x6kLUutKlRvolsZM.97 |
