Happy they don't do this. Any arm produce, because the friction forces of the diamond against the vinyl, a "skating" force witch is not constant. That you need to compensate if any angle (more or less) to avoid the diamond to try to climb the inner side of the grove. This anti skating compensation will unbalance the head cantilever from its rest (aligned) position, with an important error angle because it is short. Much more than the very little one, negligible, you can achieve with a servo-ed linear tracking.
About Technics specifications, i don't believe such a company can pretend false specs. And not at those years.
You don't need any record to measure the accuracy of a rotation speed, and you measure rumble with a smooth surface or a grove with no modulation.
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Sorry getting little carried away.In a cutting lathe, why not use a standard 9" pivoted arm to cut vinyls ?
Cutting heads are pretty heavy , the force for the cutting stylus are MUCH higher than for tracking, the cutter has to be heated and there is a kind of vacuum hoover to remove the metal from the record.
Tangential is used, because it is more accurate in tracking error and allows a stable heavy installation of the cutiing head, which no usual arm can carry.
Do not forget, amplifiers for the cutter head need at least 60 watts to drive the cutter proper, but your MM or MC brings a few millivolts only, so its complete different.
Cutter heads work also tangential, cantilever based cartridges do that only when no signal is there.
OK looks difficult to have a pivoted cutting head.
Regards.
Thanks Groove-T and Esperado
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See attachment.
You are right doubting the 0.012% Wow & Flutter number (note the asterisk)
George
Attachments
George, as it is direct drive (no added mechanics like pulleys and belts to add effects of eccentricity), what better method than to look at the PLL level to measure the speed errors ?
Anyway, if I cannot hear any wow, it is good enough for me ;-)
Some interesting and informative information on vinyl. What I cant help noticing though is those that rate vinyl as the ultimate seem to have a go at all the rest (the heretics that produce figures showing the difference between V and D) for slagging vinyl off, when they haven't. In fact most (my self included) use have and enjoy vinyl and the only crime seems to be stating facts that some don't like. I find this happens quite a lot and detracts somewhat from a well informed and educational discussion.
Kick a man when he's down eh Max
Strangled cats tend to be rather quiet I believe, due to them being dead...a menagerie of cats being strangled would probably produce some sound...
They probably have the strings on their instruments the wrong way round.....
Nice and inspiring. Considering they are students learning classical music.
Here is more from them. Vivaldi-Four Seasons I think
Regards.
Tachometer!
But in reality we have W & F introduced by excenter errors of the record, then there are some warps which interact also with arm/Cartridge resonance or a combination of both errors.
Then comes the platter bearing and the motor/drive system into the game and in the end the rumble, be it from the motor/drive or externally via floor or airborne and not forget to mention the record content itself.
EMT had a platter only apx 200 gram on the 950, but the electronic simulated a 8 kg platter, this way they reached very stable conditions, from 0 to stabel locked in 33,33 this machine had only 200 mS.
( many Experts say this was the cleverst DD ever done).
They 930 with idler wheel was not much away and worked with a felt brake to reach stable conditions with his 25 Watt 3 Phase Motor.
Thank you, always appreciate your expert input. Big question - would that include test records? Any old patents to reference how it was done I would think DSP might be able to undo/fix it.
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I cannot understand lot of things i read or heard, from the beginning of the Digital.
I'm born with vinyl. My first loves had grown up on vinyls ;-). I designed turntables for a hifi company, I recorded mixed and produced records on vinyls.
Same thing with argentic photography, my very first professional activity.
So, you can imagine how i know and love this "analog" period.
Well, each time i was listening to lacquers or the first vinyl samples from one of my (analog) masters, i was just crying because of the massacre.
When the CDs arrived, comparing them to the master, it was like a miracle. No more compression. Near perfect clones. No more distortion, no more noises and losses of details, trebles and dynamic. And if i noticed sometimes some harshness, or artificial sound, it was mostly due to the analog stages of the first CD players, or poor AD converters.
And now, for 0$, i have in my PC a multi track better than any prestigious and so expensive Ampex or Studer studio machines that you were obliged to align every mornings.
By the way, at the beginning of the digital recorders, i used to invite in my studio all the colleagues witch pretended that digital was this or that, you know. Just to compare in a blind test an analog original and its digital copy. They ALWAYS failed to recognize one from the other.
While it takes half of a second to discriminate a vinyl for the deaf dog of Scott Wurcer.
Now, if some prefer the emotions they feel why they listen to vinyls, that is an other story. First daguerréotype are full of an atmosphere that you will never produce with a digital photography and a modern lens.
But, pretending that digital is not Hifi, and that Vinyl are more accurate is just disinformation. For what profit ?
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Aha, the questions of Richard, who perfectly knows the answers. Even with a brand new tip, you cannot prevent LP damage while you play them ;-)
They will destroy themselves even if you don't play them, because Vinyl ages with time.
Yes, elliptic tips have better tracking, while they damage more the records and wear faster.
Changing the shade of your tips can help to recover a less damaged sound due to the vinyl wear, because the contact can be on a slightly different portion of the grove.
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