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Introducing the Phono Cartridge Measurement Library
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Sorry no. I'll find it
Actually where do I find it?
morillon
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sweep approaches, even if fundamentally the most interesting, don't really help with "ranking", that's not really the idea... and so much the better
if the idea is “so what should I buy?” that's not really the spirit of all this... it seems to me...
;-)
Post #2 spoiler.
It's a tricky proposition also due to the variables involved. Particularly for MM, what may be a great cart when loaded correctly may not work for some if they can't load it the same way. The info provided here is just one piece of the puzzle.
aaaakkkk
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Can you see how many plates the core in a signet consists of? Is he the same as in series 150-440-540? Maybe the bodies of the cartridges themselves have a different inclination relative to the shell?
aaaakkkk
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I have to say that I very much disagree with this sentiment. In fact this thread was started on the belief in the consistency of companies such as Audio-Technica. See the measurement proof of concept post here for examples: https://audiosciencereview.com/foru...tridge-measurement-library.46108/post-1643773
Certainly there can issues like channel inductance differences. (At least that what I think you are getting at, not sure if the string tension you are bringing up is directly connected, excuse me if I missed your main point.) In fact I tried blaming my bad results with the AT150MLX on just that. Again, this cartridge seems to drive people crazy, lol. See this post:
Phono Cartridge Response Measurement Script
Not looking at its peak - more at the curve profile and where it rises to its peak - the needle will reach it's minimum tracking ability at the resonance frequency of the cantilever, where the resonance itself will interfere with consistent mechanical contact with the groove, resulting in rising...
But JP showed that overall that cartridge was quite consistent. He measured 6 of these:
Phono Cartridge Response Measurement Script
6 150MLX bodies including yours: 352/364 354/358 352/350 360/363 304/333 346/354 150MLX inductance
We are simply not seeing this issue much in the near 100 measurements posted so far. I measure this for every cartridge and mention it if it could be an issue (see Grace cartridge). But I am starting to believe that some eras/manufacturers were worse than others. I have a NOS Technics coming up in a few weeks that is showing an anomoly and I expect it to look similar to JPs' cartridges of that era, which have showed disappointing results. But they are old cartridges and that's a part of the game.
To me there is a big issue with that stylus whether people choose to believe it or not. The measurements are not lying. The fact that there are also more normal results with other styli seems to say that this is not a tonearm compatibility issue. This was a used stylus --pre-owned NOS, but was it really??-- , so thinking the manufacturer is at fault before anything else would not be my first thought. That resonance should be very audible. Perhaps that's why it was sold. Maybe it's a retip gone bad, who knows? More global pictures including the cantilever could help.
What I see is well within a reasonable margin of error. It could simply be set-up. You'd need more samples to know for sure that there is a difference.
Variation in cartridge body parameters, has a greater effect on the balance of the cartridge channels and on the power of its output. Distortion is affected by the replacement unit, damper + cantilever Perhaps this particular replacement block on the signalet is installed at a more correct angle than 150. It seems incredible to me that an iron case can affect distortion. By the way, this piece of hardware is attached to the body of the cartridge through a plastic gasket.
As soon as I have time I will make a report on 540ml with different string tensions.
It might be interesting to know. that in the 150, 440 series the string was metal. in the 540 series the string is plastic.
OP
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I was excited to post my first truly vintage cartridge measurements for a NOS Empire 880P early next year. Measurements are available for many of the early stereo cartridges but most were taken with a CBS STR-100. I've personally done everything I can with modern cartridges (some interesting and historically important ones coming up this month) so this is one way to keep things interesting. But...
And...
Ouch. This P100CMK4 was a bit of a surprise.
Balle Clorin
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Fokus stacked? What camera? Lightning?
Titanium tube? What threw me is that the the .2 x .7 "special elliptical" has fins.
OP
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Yup. EPC-205CII-L. Hope it has held up.
I know the question was for JP but I've been playing with (super lazy) focus stacking too this past week. The ones for the Empire are the result of stacking two photos. They would look like the older Technics ones otherwise. It helps I think.
JP, I think you can see pollen on the diamond tip on yours. Very nice picture.
I know the question was for JP but I've been playing with (super lazy) focus stacking too this past week. The ones for the Empire are the result of stacking two photos. They would look like the older Technics ones otherwise. It helps I think.
JP, I think you can see pollen on the diamond tip on yours. Very nice picture.
Don't think so.
Ya, I'm not very good at getting them clean. Anyone recognize this cut? **EDIT I know it's an MR/ML but it pre-dates todays offerings so wondering any specifics that may be known.
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joseph long posted this over on his instagram recently. a supposed .2x.7 on a 310mc wearing like a line contact.
www.instagram.com
Joseph Long on Instagram: "Technics EPC-310MC in for an inspection. This is supposed to be a nude .2 x .7 elliptical but it’s wearing like a line contact and I’m not sure it needs to be retipped! Still sounds great and look at these numbers! Track
72 likes, 1 comments - groovetickler on November 13, 2023: "Technics EPC-310MC in for an inspection. This is supposed to be a nude .2 x .7 elliptical but it’s wearing like a line contact and I’m not sure it needs to be retipped! Still sounds great and look at these numbers! Tracks great too...
www.instagram.com
Balle Clorin
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joseph long posted this over on his instagram recently. a supposed .2x.7 on a 310mc wearing like a line contact.
Joseph Long on Instagram: "Technics EPC-310MC in for an inspection. This is supposed to be a nude .2 x .7 elliptical but it’s wearing like a line contact and I’m not sure it needs to be retipped! Still sounds great and look at these numbers! Track
72 likes, 1 comments - groovetickler on November 13, 2023: "Technics EPC-310MC in for an inspection. This is supposed to be a nude .2 x .7 elliptical but it’s wearing like a line contact and I’m not sure it needs to be retipped! Still sounds great and look at these numbers! Tracks great too...
I reached out to him.
Yes but I don’t think just like a current MR/ML. I’ll have to throw a SAS under the scope.
Those are just microscope shots that are stacked and hit with Topaz SharpenAI. Hardest part is figuring out lighting.
aaaakkkk
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I wonder how these holes in the cantilever will affect its resonance
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