Azimuth 2020

Cleeds you are smoking too much pot and like usual you have no idea what you are talking about and are only confusing others who are trying to understand this. You should be ashamed of yourself. When you have no idea what you are talking about we would all be better served if you would just shut up.  edwyun in no way is phase affected by azimuth. Fortunately, phase shift between the two channels is frequency sensitive. Only high frequencies suffer significant phase shift with tracking error. Bass frequencies are not significantly affected. 
Melm, absolutely correct. 

Cleeds you are such a baby. You have all my posts deleted because you can't take being dead wrong. melm, don't bother. He is totally incapable of understand. I already tried an analogy a 3 year old could understand.
Cleeds is a contrary. (Little Big Man) 
Everyone better read this before cleeds has it deleted. Never in doubt and always wrong.

Civility? are you kidding me? Stupidity is more like it. Cleeds has no idea what he is talking about. He obviously flunked out of geometry in high school. I assume his talents lie elsewhere. At least I hope they lie elsewhere. As for sociopathology. Are we living on the same planet? You do not have to look very far to see some real sociopathology. Just open your door. And, the silent majority is just as bad. They should be chanting at the top of their lungs "all lives matter" not hiding in a corner. 
This is another post that is going to be deleted so you better read it fast. OK cleeds you can have it deleted it was really for your eyes only. Do yourself a favor and download a book on geometry and see if you can find an imagination while you are at it.

Cross talk is affected by azimuth. Phase is affected by tracking error.

Cleeds, Lederman is a business man and obviously his approach has worked on you. Everything he belches is common knowledge except for the stuff he makes up like "jitter." When he says "jitter" just replace it with "miss tracking."
 As you raise the VTA of an offset tonearm the stylus leans towards the rim of the platter. As you lift the head shell the stylus leans toward the spindle. Everyone, imagine your arm sticking straight up. What position is the stylus in? Now imagine you arm straight down. What position is the stylus in? Nuff said.

Uberwaltz, don't tell me you are in love with Peter Lederman. I thought MC was the only jitterbug here. Peter Ledernman is no god. He took an old B+O design and stuffed it in an ugly body. He learned how to manufacture cartridges, something anyone even you could do and created a marketing strategy to suck people in. None of this is rocket science. The real cartridge god is Joseph Grado. Everything comes from his work. He tossed the moving coil design because with the materials he had on hand the moving mass was simply too high and even with the stiffest suspensions there were serious resonance problems in the upper registers. So he created the moving iron design which was far superior with the materials he had to work with. The B+O was a modification of his design something that Peter fails to mention god forbid he should give Grado some credit. I think Joseph Grado would be pleased to see what has happened to the moving coil design with modern materials and magnets. 

Darn Terry don't tell everybody!! 

Actually terry I have tossed cartridges for less and I won't sell them off either without letting the potential buyer know they are defective. I expect cartridges to be perfectly aligned and stay that way. If they are not and don't I permanently avoid that manufacturer. But as I have said all the top manufacturers are very good. I have not seen a defective cartridge in a long time. So, I expect very few people will wind up tossing their cartridges.
Get that stylus perfectly perpendicular and chance are your cross talk will be at it's best. If you want to spend $300 on a fozzgowhatever to prove it to yourself knock yourself out. I'd rather buy music:)

Lewm, that is correct it is just measuring the amount of leakage across channels and it does allow you to optimize this. As you have noted the problem is this does not guarantee a perpendicular stylus and the thing cost what, $300? A pocket mirror guarantees a perpendicular stylus and costs maybe a buck fifty?

Peter Lederman is the last person I would take advice from. As lewm suggests it is a record wear issue not a crosstalk issue. Crosstalk goes to how well the cartridge was constructed. The the crosstalk is not at it's highest value with the stylus perfectly upright in the groove then toss it. It's junk.
Next. Springstein, I am not at all sure what you are talking about. The only really important factor in regards to the mirror used is it's thickness which should be about the same as a 150 gm record. Why? The vast majority of us have offset tonearms. Because of the offset as the arm goes up the stylus leans toward the spindle. Azimuth in offset tonearms is elevation sensitive. Those with tangential trackers can use a coke bottle if they want. As far as what side of the mirror is plated? It does not matter. As long as the stylus is at record level and the reflection is perfectly symmetrical you are in business. 
Some people try to just eyeball the stylus. Bad idea. The stylus has glue around it which is never even and it can fool you. The mirror greatly magnifies the error and allows you to focus on the very tip of the stylus.
You need good lighting! Try it and you'll see. Just grab one of your wife's compact cases. There is a mirror in the top. Also don't forget to defeat the anti skate or the arm will slide backwards!

There you go, Lewm has the right idea. You put the stylus down on a pocket mirror which makes the error much easier to see. Use a good light.
The stylus and it's refection form an hourglass. You adjust the azimuth until the hourglass is perfectly symmetrical. There is no better way to do this as this insures the lowest record wear. If the cartridge is not constructed well you might have more crosstalk but the solution to this problem is not more record wear. It is a better cartridge.