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The difference between Moving Magnet / Moving Coil / Moving Iron Cartridges


MicroMara

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Source: https://www.stereophile.com/content/analog-corner-289-ortofon-anna-diamond-mc-phono-cartridge

 

An amazing picture from a Michael Fremer, of a high end Ortofon mc needle.

It is disheartening to see how dust is sticking to the stylus. This surely must affect the sound, unless they calculate it into it.

 

This is a picture from the Ortofon website, showing the same needle, dust free

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https://www.ortofon.com/mc-anna-diamond-p-898

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On 1/29/2021 at 9:15 AM, Full Range said:

 

Would you be willing to conduct an experiment ?? to see if wood is the same / better / worse than automotive gasket material 

 

You have the wood divider to use as a template 😎 

Yes Sir I Will ...but needs time ........

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  • 2 weeks later...
19 minutes ago, Full Range said:

I came across this product today and thought it could be good secure storage for cartridges 

 

If positioned carefully it could work well 

Thoughts 

 

 

https://www.materiol.com/products/time-clip-display-frame

 

First I thought you were a spammer. 😉

They are on sale, btw:

image.thumb.png.bbdb64d29e89e2e987e74830b289bf21.png

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7 hours ago, Full Range said:

Some basic adjustments for azimuth and channel separation using different test records and the new feature on my puffing phono

 

@MicroMara

You need this German test record ( if you don’t already have it ) as I will be purchasing it in due time

 

https://www.discogs.com/sell/release/5813497?ev=rb

 

 

There 's a company who  makes a business doing this adjustment under the microscope. They ask 500 US Dollars for it. The price of a Puffin... 

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3 hours ago, MeloManiac said:

There 's a company who  makes a business doing this adjustment under the microscope. They ask 500 US Dollars for it. The price of a Puffin... 

 

So the answer to this conundrum is to buy a puffing phono 😎

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  • 4 months later...
  • 4 months later...

The perfect  3-dimensional Tonearm Installation tool called " The Protracor " , thought this information makes sense . Made in Germany

 

You can read the manual in english language .....

 

http://www.feickert.org/fileadmin/bilder/Downloads/Protractor_BDA_2011_mail.pdf

 

 

This is how it looks like

 

1030282593_DR.FeickertProactor1.thumb.jpg.67e3931a77b2aec64fa46131550d2993.jpg

 

 

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On 12/16/2021 at 2:29 PM, MicroMara said:

The perfect  3-dimensional Tonearm Installation tool called " The Protracor " , thought this information makes sense . Made in Germany

 

You can read the manual in english language .....

 

http://www.feickert.org/fileadmin/bilder/Downloads/Protractor_BDA_2011_mail.pdf

 

 

This is how it looks like

 

1030282593_DR.FeickertProactor1.thumb.jpg.67e3931a77b2aec64fa46131550d2993.jpg

 

 

Thanks for the good info , wanting to get back  into records 🤓

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On 1/16/2022 at 10:07 PM, Tom05 said:

Thanks for the good info , wanting to get back  into records 🤓

I´m using this tool as well for my tonearm alignment , works perfect !

 

Feickert1.thumb.jpg.62c9d9f4c00631fb2be48d0a6e05e487.jpgFeickert2.thumb.jpg.8d55df2e182e2b21cde5084fb78d1a80.jpg2125182583_Step1Lofgren.thumb.jpg.25b245e740f2cae5226c8f526a495e94.jpg

 

Feickert3.thumb.jpg.361725f6c86c18b2f4ac0a1064f57750.jpg832568292_Step2Lofgren.thumb.jpg.fe26053c76b6aac4ae0d3353872b087a.jpgFeickert5.thumb.jpg.5f961d55a82468107d9609cbc4f25088.jpgFeickert7.thumb.jpg.d3e568e4d24a12e2be64d02d2e238fb9.jpg

 

I really can recommend this tool to everyone whose using a TT and owns a lot of different cartridges mounted on headshells

 

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Update for all Technics SL-1200 Lovers , new limited version SL-1200 LD  was introduced  in April !

 

The Technics SL-1200 turns 50 years old. This great anniversary is now celebrated with a limited special edition of the turntables.

There are few music products, if not none, that have such a good reputation and have been the absolute measure of all things for decades. The Technics SL-1200, or SL-1210, has been part of the DJ scene since the very beginning and has quite rightly earned its status as an indestructible and solid companion. In 1972, the SL series appeared for the first time and after a long break Technics has meanwhile found its way back to the market with the SL-1200 Mk7.

 

The half century is now celebrated with a limited special edition. Limited to 12,000 units, the SL-1200 Mk7 is offered in seven different colors. Instead of classic black, you can also choose yellow, green, white, beige, blue or red. Technically, the special edition is completely based on the Mk7. In addition to the color of the housing, however, the tonearm has also been anodized gold, the slipmat is adorned with a gold Technics logo and there is a plaque under the pitch fader on which the serial number is engraved.

 

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Available Colors ..

 

 

810333379_SonderserieTechnicsGold.jpg.3abf0fd567a47866a759a16e1ceee410.jpg

 

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Resurrection as Pro-Ject Micro Seiki Incognito, introduced at the German High End Exhibition in Munich. May 22nd. 2022

 

At the Pro-Ject booth, several  editors caught the eye of a new product that was strikingly reminiscent of an old one.

Apparently, the legendary Micro Seiki DQX 1000 is celebrating a kind of resurrection as a Pro-Ject, which is great news per se for lovers of such a design classic. The device will be available with either direct or belt drive and, of course, multiple tonearms can be mounted simultaneously. Prices are not yet fixed.

 

 

1486793323_Por-JectMicroNachbau.thumb.png.a3a5da0e58023e187efd3e77d83d9ea1.png

 

That´s the origin DQX 1000

Micro_Seiki_DQX-.jpg.915bd70e6c3c374e77e1c8d6f77ddb1d.jpg

 

and that´s mine ....

 

vinylsession3.thumb.jpg.1a388f07f0a8fffb5f0f9a4354a2e47e.jpg

 

 

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Based on our discussion in @Full Range´s Vinyl Record Spinning Thread I want to invole the developement´s standards about photo optical cartridges here as well for your further information. 

 

 

 

The Japanese manufacturer DS Audio offers with the DS-E1 the cheapest entry into the world of its internationally highly acclaimed photo-optical cartridge systems. Considering that a high-quality, optimally adapted phono preamplifier is included, the price charged is tantamount to a small sensation.

 

Conversion with light
The DS-E1, which weighs 8.1 grams, uses the same technology as its "big brothers", i.e. an LED light source, highly sensitive photosensor technology combined with a tension wire construction and a sturdy, torsion-free aluminum housing. The record is scanned using an aluminum needle carrier and an elliptical-cut diamond. The manufacturer specifies 1.6 - 1.8 g as the optimum support weight for the system.

 

Supply unit
The phono equalizer, called EQ unit, amplifies the delivered signal from the cartridge and also provides the necessary supply voltage. At the output RCA jacks of the phono preamplifier is with over 500 mV sufficient voltage for direct operation at a high level input of preamplifiers or integrated amplifiers. By the way, the DS Audio E1 operates in analog mode throughout.

 

Shading plate made of beryllium

The shading plate, an extremely thin light-tight plate, corresponds to the coil (MC) or magnet (MM) in conventional systems. Due to the newly developed separate light systems for right and left, the shape of the shading plate could be changed and significantly reduced in size. Together with the change from Alumium to Berryllium, the weight was reduced by an incredible 50%. This is less than 1/10 of the weight of a normal coil of a MC pickup!

 

Pickup
A diamond with line contact cut on an aluminum needle carrier is responsible for the direct pickup. The recommended tracking force is 2.1 g and the system weight is 7.7 g. Another improvement concerns the internal wiring , a factor 1.6 reinforced internal wiring provides a lower impedance and thus an improved current flow.

 

Equalizer- Amplifier unit
The elaborate housing with the well-formed and milled from solid front panel gives the device an elegant look and noble feel. Internally, a new reinforced circuit board with double cross-section traces is used. This reduces impedance, improves current flow and minimizes interference. For the output signal, both unbalanced RCA and fully balanced XLR outputs are available.

 

Moving mass
One of the main advantages of DS-Audio optical cartridges is their extremely low moving mass. This is significantly lower than that of conventional MC cartridges. This increases the sampling capability and fine resolution and thus the naturalness and clarity of the playback.

 

Lenz's rule
Lenz's rule states that the magnetic field of a coil set up by the induced current acts against the current flow. This is called electro-motive force (EMF) and in this particular case "counter-EMF". This highly undesirable but unavoidable effect affects both MM and MC cartridges, but not DS-Audio's optical cartridges .

 

RIAA equalization
While with all classic pickups the generated output voltage increases proportionally to the speed of the needle movement, a voltage independent of the frequency is applied to the DS-Audio optical systems. This means that a very simple passive RIAA equalization is sufficient, which manipulates the output signal as little as possible.

 

Amplification

A conventional phono preamplifier must amplify the very low output signal of, for example, an MC cartridge by a factor of up to 1000; here the amplifier unit for the DS-Audio optical systems is content with a factor of 10. This is a not insignificant reason for the extremely low distortion values of the DS-Audio cartridges.

 

Well the classic Cartridge technologie´s development steps into a new dimension . Quiet interesting imo. 

 

 

 

 

 

 

Here is a review from stereophile about the DS  3 optical cartrigde and it´s equalizer amplifier unit

 

ds003.thumb.jpg.d4d0ae1fac0c1eed4c9b369686ff0499.jpg177888338_dsoo3wandler.thumb.jpg.2dac7eff233b62229e0f4bf758f08fe8.jpg

 

 

 

https://www.stereophile.com/content/gramophone-dreams-54-ds-audio-ds003-optical-cartridge-emia-lundahl-koetsu-sculpture-step

 

Here is another vid showing the photo optical cartrides DS 002

 

 

This is the Grand Master Cartridges

 

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That´s the Eq - Amp for the photooptical Cartridge Grand Master 

 

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finally a pretty nice vid about the whole technology

 

 

Enjoy !

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On 8/23/2020 at 1:11 AM, baron167 said:

What is this sorcery? And why does MM and MC both mean Moving Magnet? And while I'm at it, what cantilever materials and stylus types are the best for a budget-minded college student?


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'Sorcery'?? MM and MC DO NOT both mean Moving Magnet! The clue is in the 'MM' or 'MC' text! MM = Moving Magnet, and MC = Moving Coil - Duh - it's not rocket science!  Try reading it all over again! Good luck in college, you'll obviously need it! You also really have no choice as to what the cantilever is made of - pretty much all MM (and most MC) carts will have aluminium cantilevers, as they are the cheapest.

Edited by Daveteauk
Says it's 'hidden'?!?
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On 8/6/2022 at 12:14 PM, Daveteauk said:

'Sorcery'?? MM and MC DO NOT both mean Moving Magnet! The clue is in the 'MM' or 'MC' text! MM = Moving Magnet, and MC = Moving Coil - Duh - it's not rocket science!  Try reading it all over again! Good luck in college, you'll obviously need it! You also really have no choice as to what the cantilever is made of - pretty much all MM (and most MC) carts will have aluminium cantilevers, as they are the cheapest.

So you logged in only to tell us what had been clarified several month ago ? It was a simple miss-understanding that´s all. You may continue with some news !

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  • 2 weeks later...

@MicroMara

 

I forgot to mention that some time ago I added a legendary MM cartridge to my collection

 

Its the amazing 
Walter Stanton WOS CS100 Collectors Series cartridge

And has a near new NOS stylus in excellent overall condition 

 

Looking for a good one for over 3 years and just a couple of months ago I finally got one 

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