2. analog
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Azimuth question

I was recently checking the azimuth setting on my cartridge with a test record in which track 2 should be left channel only and track 3 is right channel only. Well, I was trying to listen to each channel to see if I can hear any crosstalk and then I realized that my new VAC Sigma has 2 bias lights that light up for each channel when music is being played.

My question is,if I did not see any light on the right channel lights when playing track 2'of the test record and no light,on the left channel lights when playing track 3, can I conclude that my azimuth is properly set or is this just a very blunt indicator of crosstalk?
andarilu
moonglum
619 posts
 
Lew,
Regarding the guy who was invited by the Foz to tilt his cart by 15 degrees? I thought that the Foz was looking for the lowest individual value per channel but this suggests that it was trying to balance/equalise crosstalk???

It would actually be helpful if Mr Fosgate or his designate could make a guest appearance, like many others, and clarify some of the issues raised? Might take the heat out of discussions like this ;^)
mcbuddah
93 posts
 
+1 for the Foz. The calibration procedure takes about 2 minutes - most of that reading the directions. No more complicated than biasing your tubes. I still check mine out every few months when rechecking the turntable geometry, but it has not changed in more then a year - since I started keeping it in a location where it doesn't get jiggled around much. Use it a few times and the whole process will take less than 5 minutes, including mounting the test record. There probably are better azimuth tools out there, but none as easy to use. This is one of those rare audio gadgets that is actually an over-achiever. The calibration procedure is actually balancing the readings for both channels with a constant signal by using a small screwdriver until the meter indicates the same value for both channels. If the calibration step is not performed it is quite possible for one channel to be off enough to skew the result by a large margin, but common sense should dictate a point where one visually sees the madness in believing the instrument and reading the one-page manual to discover the fix.
catcher10's avatar
catcher10
77 posts
 
So to revive an old thread......I use a downloaded o-scope with the Analogue Test Record. I play Track 1, 1kHz tone in each channel, then switch back and forth between L and R on the o-scope and make adjustments to get as close to same reading as possible.

It reads mV and I get output something like X.XXXX the last 3 digits is what I try to make as close to same as possible.

Does this make sense? I used to set AZ by sight using the mirror method and magnifying glass. The very first time I used the o-scope the results were impressive.
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