STANTON 881S & 881S MK II (αφιέρωμα)

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Υπερέχει η MKI απέναντι στην ΜΚΙΙ λέει κάποιος που μοιάζει να ξέρει:


"y edmaidel

..as I was Pickering's Sales manager during the period when the XSV-3000 was introduced, and then was the Vice President of Sales and Marketing for Stanton Magnetics in the 90's just prior to its sale to a new owner in Florida.

Over the years, when both Pickering and Stanton were selling thousands of phono cartridges to consumers (in the era pre-dating the CD), telling the difference between a Pickering product and a Stanton product was often much like comparing Tweedle Dee to Tweedle Dum. That is until the XSV-3000 was introduced, when the current top of the line Stanton product was the 681-EEE.

The Pickering all but blew away the 681EEE, and most of the Stanton sales people were furious that Pickering really and truly had an infinitely superior product. That is, until the 881-S was introduced. And you're right: it was exactly the same item, though with cosmetic variations and the fact that Stanton cartridges were calibrated, and Pickering's weren't. (Though this led to an industry-wide condemnation of Pickering products as being "Stanton rejects" since they weren't calibrated, they were every bit as good as their Stanton counterparts in each and every respect.)

With the advent of the CD, Pickering's and Stanton's sales all but disappeared until the enormous popularity of the Stanton DJ business (which started in Europe) began taking hold in the U.S.

I rejoined the company (Stanton) in 1992, and despite an attempt to resurrect the consumer audio interest in phono cartridges, quickly realized that the DJ business was that which would sustain the company. The top of the line consumer (not DJ) product then was the Stanton Collector's Series, which was not only calibrated, but included individually run frequency response curves and a signed letter from Walter Stanton thanking those purchasing the product. Despite all this hoopla, the Collector's Series was identical to the Pickering XSV-5000, and yes, both were superior to the XSV-3000, but only marginally.

The current 881S-II, though it states that it has a "Stereohedron" stylus, in fact does not. This is a dirty little secret that the company won't admit to, as they still purchase the diamond tips they use on the stylus assemblies, and the prohibitively high cost of a Stereohedron stylus, in respect to the very limited sales of the product, made the substitution of an ordinary elliptical stylus tip mandatory. (This was done before I left the company in 1999.) Quite frankly, it's pretty difficult to tell the difference in sound between the two, but for the company to still actively promote it as having a "Stereohedron" stylus is quite simply dishonest.

The brush assemblies on Pickering and Stanton cartridges differ, and that used on the Stanton models is actually a little better than that used on the Pickerings, since, if the Pickering assembly (which snaps onto the outside of the stylus handle) is not carefully installed, it will indeed interfere with tracking, whereas that used on the Stanton, with a vastly superior method of connecting the brush to the stylus handle, doesn't elicit this problem. And, you're right: you must add one gram additional stylus force to the tonearm setting (as well as the same extra gram on the anti-skate setting) to offset the brush assembly.

While at Pickering, I introduced a pamphlet to explain the benefits of the Pickering "Dustamatic" Brush assembly, and that same pamplet was reproduced for the Stanton "Longhair" brush assembly. The brush does an excellent job of damping low frequency resonance in a tonearm, and also greatly improves tracking of warped records. And I've NEVER been able to "hear" the brush assembly, and think those who claim they do are certifiably nuts.

Of course, I could go on and on and on. That's all for now. Unless of course you want to hear more (and, believe me, there's lots more!)"


http://www.epinions.com/content_4351959172/show_~allcom


:107:
 

JOHN MARKOU

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Απάντηση: STANTON 881S & 881S MK II (αφιέρωμα)

Το κακό με το internet , είναι πως γράφει ο καθένας οτι θέλει , και βγαίνει και τα ποστάρει δημόσια.Το επίσης κακό είναι δεν βγαίνουν κάποιοι άλλοι να του πουν οτι λέει μακακίες.Αυτό για το mc vs mm.
 


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Το κακό με το internet , είναι πως γράφει ο καθένας οτι θέλει , και βγαίνει και τα ποστάρει δημόσια.Το επίσης κακό είναι δεν βγαίνουν κάποιοι άλλοι να του πουν οτι λέει μακακίες.Αυτό για το mc vs mm.
Συμφωνώ αν οι Sax, Boyk, Johnson και Κessler, είναι ο "καθένας". (post # 6 & # 10).

:107:
 


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Tώρα αν οι παραπάνω βελόνες έχουν το απαραίτητο, κατά τον προαναφερόμενο ειδικό STANTON emaidel,...χαλινάρι που μειώνει την παραμόρφωση που προέρχεται από τις παλινδρομικές μικροκινήσεις της βελόνας πάνω στον άξονά της, δεν μπόρεσα να το διαπιστώσω!

Το...χαλινάρι της STANTON:





http://www.google.com/patents?id=7KEvAAAAEBAJ&zoom=4&pg=PA1#v=onepage&q&f=true

(συνεχίζεται)

:107:
 

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τι τον τσιγκλίσατε γ@μώτο...θα το κάνει asus το θρέντ...:137:
να σου πώ την αλήθεια τόσο που ψάχνεσαι...αν ήμουν διευθυντής σίγουρα θα σε προσλάμβανα στο τμήμα του marketing.:137:
 

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Απάντηση: Re: STANTON 881S & 881S MK II (αφιέρωμα)

να σου πώ την αλήθεια τόσο που ψάχνεσαι...αν ήμουν διευθυντής σίγουρα θα σε προσλάμβανα στο τμήμα του marketing.:137:
Δεν είσαι εκτός...


:142:
 

JOHN MARKOU

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Απάντηση: STANTON 881S & 881S MK II (αφιέρωμα)

Συμφωνώ αν οι Sax, Boyk, Johnson και Κessler, είναι ο "καθένας". (post # 6 & # 10).

:107:

To οτι το είπανε μερικοί "επώνυμοι" δεν σημαίνει οτι δεν λένε μακακίες.:137:
 

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To οτι το είπανε μερικοί "επώνυμοι" δεν σημαίνει οτι δεν λένε μακακίες.:137:
Οπωσδήποτε όχι!

Σίγουρα εμείς έχουμε δίκιο...


:107:
 

JOHN MARKOU

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Δεν λέω οτι εμείς έχουμε δίκιο.Εστιάζω στο κειμενάκι , που έλεγε ο τύπος οτι έχανε τον καιρό του με mc κεφαλές.Αφού λοιπόν οι mc κεφαλές είναι άχρηστες, κατ'αυτόν , γιατί θεωρούνται κλάσεις ανώτερες απο τον περισότερο κόσμο?
Γιατί αν κάτσει κανείς και διαβάσει θα δει οτι η θεωρία της mc είναι κάτι κλάσεις πάνω απο της mm.Κάνε ενα ψάξιμο στο google και θα δείς τι εννοώ.
 

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Απάντηση: STANTON 881S & 881S MK II (αφιέρωμα)

Δεν λέω οτι εμείς έχουμε δίκιο.Εστιάζω στο κειμενάκι , που έλεγε ο τύπος οτι έχανε τον καιρό του με mc κεφαλές.Αφού λοιπόν οι mc κεφαλές είναι άχρηστες, κατ'αυτόν , γιατί θεωρούνται κλάσεις ανώτερες απο τον περισότερο κόσμο?
Γιατί αν κάτσει κανείς και διαβάσει θα δει οτι η θεωρία της mc είναι κάτι κλάσεις πάνω απο της mm.Κάνε ενα ψάξιμο στο google και θα δείς τι εννοώ.
Μόνο, αν θέλεις, ας το κάνουμε σε ένα νέο νήμα για να μην χαλάσουμε το αφιέρωμα.

Σε ευχαριστώ.


:107:
 


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Απάντηση: STANTON 881S & 881S MK II (αφιέρωμα)

Δεν λέω οτι εμείς έχουμε δίκιο.Εστιάζω στο κειμενάκι , που έλεγε ο τύπος οτι έχανε τον καιρό του με mc κεφαλές.Αφού λοιπόν οι mc κεφαλές είναι άχρηστες, κατ'αυτόν , γιατί θεωρούνται κλάσεις ανώτερες απο τον περισότερο κόσμο?
Γιατί αν κάτσει κανείς και διαβάσει θα δει οτι η θεωρία της mc είναι κάτι κλάσεις πάνω απο της mm.Κάνε ενα ψάξιμο στο google και θα δείς τι εννοώ.

Άλλη δουλειά δεν έχεις ρε παλληκάρι?

Σε είπα 1 φορά: όξω!!:106:

Αφού τον καραβέλο τον γουστάρουμε κ τον αγαπάμε:136:

Άφησέ τον να κάνει παιχνίδι:141:
 

JOHN MARKOU

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Nai εχω να ξυρίσω μερικά μούσια σαν και το δικό σου.
Ρε ουστ.!!! ουστ!!!:202:
 

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Όταν μία βελόνα έχει την τεχνολογία να παίρνει την πληροφορία από το αυλάκι αγγίζοντας με ένα μόνο γραμμάριο, τότε, όπως έχει αποδειχτεί από σχετικές μελέτες, δεν προκαλεί φθορά στον βινύλιο!

STANTON NO WEAR TECHNOLOGY




Στην φωτό μιλάει για 200 παιξίματα, ενώ έχει βρεθεί πως ένας δίσκος σε οικιακό σύστημα δεν ξεπερνάει, κατά μέσον όρο, τα 50 για όλη την διάρκεια ζωής, (του ιδιοκτήτη του!).

:107:
 

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Με την υποσημείωση ότι όσο αυξάνεται το εμβαδόν της επιφάνειας επαφής με το αυλάκι μειώνεται η φθορά, δείτε μερικές μελέτες πάνω στο θέμα:

"Here's what literature has to say with respect to record wear:

1 mil = 1 thou = 25.4 microns (1/1000 inch)

===============================================

1. Barlow, Groove deformation in gramophone records, 1958

Limiting load for plastic deformation for a 1 mil tip in a 90 deg groove is
0.64 gr. A 0.5 mil tip presents a side contact area of 23.4 square microns (from Davies below).

2. Flom, The deformation of plastics with hard, spherical indenters, J. of Audio Eng. Soc. 1959, p.122

Plastic deformation on vinyl occurs for a 0.005 cm stylus at 5 grams static
load.

3. Walton, Gramophone record deformation, Wireless World 1961, July, p.353

Shows a graph with VTF vs stylus radius : plastic deformation is caused for spherical styli of 0.0003 inch at 2.1 gr deformation, 0.0004 inch 2.7 gr, 0.0005 inch 3.1 gr etc.

4. Anderson, Some aspects of wear and calibration of test records, J. of Audio Eng. Soc. 1961, p.111

Investigation concerning the wear occasioned by the initial playing of test
records at various needle forces.
Frequency response curves were taken to show high frequency wear. The first playing, especially at high VTF, accomplishes a large part of the wear observed after 20 plays. A first play at 9 grams had worn off 1.5 dB. For the same standard M3D cartridge at 9 gr a drop of 5 dB at 15 kHz occured, at 6 gr 2 dB, at 3 gr no drop , all drops indicated after 20 plays

Results : the first playing, especially at high tracking force, accomplishes
a large part of the wear observed after 20 plays.
Wear drops rapidly as tracking force is reduced. Measured was frequency
response; it turned out that the response dropped by up to 5 dB at 15 kHz, indicating high frequency wear.

5. Oakley, Inner groove distortion, Audio Magazine 1962, June, p.57

For 0.5 mil styli a VTF of more than 3 grams tends to erase high frequencies

6. Hunt, The rational design of phonograph pickups, J. of Audio Eng. Soc. 1962, p.274

One of the resonances present in the system is the stylus groove resonance which is difficult to suppress. It's maximum is especially in the
intermediate portions of the stylus suspension. The transducing mechanism is sensing motion in that portions so that the resonance will appear in the electrical output of te cartridge as spurious response.

Solutions are either to locate such resonance above the audible range or to apply damping.
Damping is ordinarily chosen. This damping, however, leads to overdamping at frequencies other than the resonance frequency. An additional force is thus exerted on the stylus in the
mid frequency range. The increased force leads to increased frictional work and to increased wear.

7. Walton, Stylus mass and reproduction distortion, Wireless World 1963, April p.171

Pictures of stereo grooves played with pickup at 2.7 gr VTF (stylus mass 3
mg). Permanent indent depth = half modulation depth. After 5 playings, little further deformation is visible. Low effective tip mass is advantageous.
8. Kogen, The elliptical stylus, Audio Magazine 1964, May, p.33

VTF for 0.2 mil 0.9 mil elliptical stylus should be no greater than 1.5
grams.

Frequency response :

0.2 mil elliptical tip
no change at 1 gr VTF
slight change between 10 20 kHz at 1.5 gr after 100 plays
significant change between 10- 20 kHz at 3 gr

0.7 mil circular tip
slight change between 10-20 Khz at 3 gr after 100 plays

More wear because of smaller contact area for the elliptical tip.

A record played at 1.5 gr with 0.2 mil elliptical tip showed signs of wear
under microscope, but this wear was not detectable in the sound.

9. Barlow, Groove deformation in gramophone records, Wireless World 1964, p.160

Presents a 1 thou radius stylus under increasing static load : not
calculated but observed at 12 mg, fully elastic range
at 0.5 gr, plastic deformation just reaching the surface
at 2.5 gr, fully plastic range

10. Bastiaans, Factors effecting the stylus/groove relationship in
phonograph playback systems, J. of Audio Eng. Soc. 1967, p.389

Yield point of record plastics = 14,500 psi. He refers to older papers
saying that in the stylus/groove contact, sub surface yielding begins near a load of 0.150 gr and plastic yielding at 1 1.6 gr (for a 17.8 mil tip). Microscopic examination of a groove played with 2 gr VTF revealed a slight permanent indentation track on both groove walls.

11. Anderson, Phonograph reproduction Audio Magazine 1978, May, p.3 (pt.1), June, p.42 (pt. 2)

Tracing distortion relates to size and geometry of the stylus tip.
Distortion decreases and wear increases with decreasing tracing radius of
the tip. Record wear is related to tracking force and trackability. Minimum
distortion results from a tip of 5 microns. This demands a VTF of lower than 1.5 grams. By well designed shape of the tip the tracing radius gets small without having a too small contact area. The contact area is related to indentation and stress in the groove wall, thus influencing wear.
Tests were carried out with the version IV cart with biradial, hyperbolic
and hyperelliptical (25.4 x 38 microns) tips. As far as record wear is
concerned, no difference between the tips was found, when playing with 1.25 grams.

They further state that at that time, there was no measured evidence that
the use of a long contact area stylus (van den Hul, fine line, micro line, microridge = 3.8 x 76 microns ) allowed to play with more than 1.5 grams without affecting record life.

12. Pramanik, Understanding phono cartridges, Audio Magazine 1979, March, p.33

Record wear in UNMODULATED grooves starts at about 3 gr. Wear is not only directly attributed to VTF, but also on friction between the tip and the groove wall.
A correctly shaped and well polished tip does not cause wear.

The compliance is determined by stiffness of the elastomer cantilever
suspension and the cantilever length. Elastomer stiffness is not constant, but varies with frequency. With increasing frequency compliance decreases (becomes stiffer).
The suspension exerts a force attempting to restore the stylus assembly to its mean position (the optimum position for what the stylus was designed for). The stiffer the suspension (the lower the compliance) , the larger is that force. VTF must be at least as large as the restoring force in order to maintaining contact with the record.

Starting from the mean (design) position:
1. when the stylus attempts to move below the mean position, the cantilever restoring force tries to move it upwards. Here VTF comes into play to avoid that the tip loses contact.
If VTF is too low or smaller than the restoring force, the stylus will loose
contact and cause severe damage when bouncing back into the groove.
2. when the stylus attempts to move above the mean position, the total force on the record is the sum of restoring force and VTF.
If compliance is low and, as a consequence, VTF is rather high to maintain
contact with the record for the largest amplitudes to be found (low frequency trackability), the sum of forces can be so large as to result in stylus pressure that deforms the groove into the plastic region, causing permanent damage.

As far as effective tip mass (ETM) is concerned, it plays a role in the high
frequency region, where acceleration is high. VTF must be at least as large as the force defined by ETM (F=m x a) and the largest acceleration on the record.
If VTF is too low, the stylus again will loose contact.
Even when VTF is adequate, the pressure on the tip when on the bottom of the groove is due to the sum of forces required to accelerate ETM and the VTF, which is constant. The larger ETM, the higher the forces and the higher the pressure exerted on the groove which may be sufficient to cause plastic deformation.

So one has an interest to have a cartridge with low ETM and rather high
compliance to avoid high VTF.

13.Davies, Close up look of record wear, Audio Magazine 1980, Sept., p.38

Scanning electron microscope study for Shure's M91ED cartridge with 1 gr VTF and a not specified MC with 2.5 VTF (records were played 50 times) on high quality audiophile record.
Even the unplayed record showed signs of surface imperfections, e.g. holes.

Shure : photos show audible loss of quality. Pieces of vinyl have come off
the surface. Distinct wear lines can be seen parallel to the groove. The
type of damage caused is termed surface conchoidal fracture, resembling
broken of shattered glass. The groove surface reminds glass surfaces being chipped by fine sand.

Another record shows enormous damage after 50 plays, showing the same type of damage and many longitudinal wear lines.

MC : tearing and gouging wear is predominant (dust as grinding agent).

All styli present pressures of 30.000 to 69.000 psi with a VTF of 1 gr.
These high pressures have led people to assume that plastic or permanent deformation occurs, the yield point of the vinyl being 14.500 psi. Static indentations in the elastic range can be described by the equation of Hertz.
It appears that no solution exists for the plastic range, especially for
sliding indentation with friction.

The study found that the quality of the vinyl plays an important role as far
as sound quality is concerned. In particular the filler material used is of great importance, it seems that it has tendency to split off. Dust in the groove is pushed and pounded into the groove wall, scouring and gouging the wall"


:107:
 


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Απάντηση: STANTON 881S & 881S MK II (αφιέρωμα)

Kαι πως το έθετε η STANTON στην δεκαετία του '70:





(Aπό το user's)

(συνεχίζεται)


:107:
 

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Άρχοντα Καράβελλα πολύ ωραία η παρουσίασή σου!!! Θα μας κάνεις τώρα που καταλήξαμε στα ..όμορφα των πικαπακίων, να ψαχτούμε και για τη Stanton??:426:

Όσο διαβάζω την παρουσίαση, τόσο ψάχνω να τη βρω!!!

Συγχαρητήρια και πάλι για τις πληροφορίες που μας δίνεις!:444:
 


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