2. analog
  3. 189527-245

MC-MM-MI CARTRIDGES . DO YOU KNOW WHICH HAS BETTER QUALITY PERFORMANCE? REALLY?

Dear friends:The main subject of this thread is start a dialogue to find out the way we almost all think or be sure about the thread question :  " true " answer.

 

Many years ago I started the long Agon MM thread where several audiophiles/Agoners and from other audio net forums participated to confirm or to discover the MM/MI/IM/MF/HOMC world and many of us, me including, was and still are" surprised for what we found out in that " new " cartridge world that as today is dominated by the LOMC cartridges.

 

Through that long thread I posted several times the superiority of the MM/types of cartridges over the LOMC ones even that I owned top LOMC cartridge samples to compare with and I remember very clearly that I posted that the MM and the like cartridges had lower distortion levels and better frequency range quality performance than the LOMC cartridges.

 

In those times j.carr ( Lyra designer ) was very active in Agon and in that thread  I remember that he was truly emphatic  posting that my MM conclusion was not  true due that things on distortion cartridge levels in reality is the other way around: LOMC has lower distortion levels.

 

Well, he is not only a LOMC cartridge designer but an expert audiophile/MUSIC lover with a long long and diverse first hand experiences listening cartridges in top TT, top tonearms and top phono stages and listening not only LOMC cartridges but almost any kind of cartridges in his and other top room/systems.

 

I never touched again that subject in that thread and years or months latter the MM thread I started again to listening LOMC cartridges where my room/system overall was up-graded/dated to way superior quality performance levels than in the past and I posted somewhere that j.carr was just rigth: LOMC design were and are superior to the other MM type cartridges been vintage or today models.

 

I'm a MUSIC lover and I'm not " married " with any kind of audio items or audio technologies I'm married just with MUSIC and what can gives me the maximum enjoyment of that ( every kind )  MUSIC, even I'm not married with any of my opinions/ideas/specific way of thinking. Yes, I try hard to stay " always " UNBIASED other than MUSIC.

 

So, till today I followed listening to almost every kind of cartridges ( including field coil design. ) with almost every kind of tonearms and TTs and in the last 2 years my room/system quality performance levels were and is improved by several " stages " that permits me better MUSIC audio items judgements and different enjoyment levels in my system and other audio systems. Yes, I still usemy test audio items full comparison proccess using almost the same LP tracks every time and as always my true sound reference is Live MUSIC not other sound system reproduction.

 

I know that the main thread subject is way complicated and complex to achieve an unanimous conclusions due that exist a lot of inherent differences/advantages/unadvantages in cartridges even coming from the same manufacturer.

 

We all know that when we talk of a cartridge we are in reality talking of its cantilever buil material, stylus shape, tonearm used/TT, compliance, phono stage and the like and my " desire " is that we could concentrate in the cartridges  as an " isolated " audio item and that  any of our opinions when be posible  stay in the premise: " everything the same ".

 

My take here is to learn from all of you and that all of us try to learn in between each to other and not who is the winner but at the " end " every one of us will be a winner.

 

So, your posts are all truly appreciated and is a thread where any one can participates even if today is not any more his analog alternative or is a newcomer or heavily experienced gentleman. Be my guest and thank's in advance.

 

Regards and ENJOY THE MUSIC NOT DISTORTIONS,

R.

Ag insider logo xs@2xrauliruegas

Showing 2 responses by atmasphere

atmasphere's avatar
atmasphere
11,632 posts
 

It’s just an observation that I came to realize after 50 plus years of playing records using different turntables, arms, phone amps and cartridges. There’s no mechanism involved, just personal experience. Could it be wrong? Maybe…Addressing your other comment, “Good” is arbitrary and hard to define but…what ever you think it is…seems best.

@bsion A lot of phono sections designed for MM cartridges make ticks and pops all on their own due to poor high frequency overload problems. The cartridge has an inductance and that in parallel with the capacitance of the tonearm cable sets up an electrical resonance (a peak like a tone control) that can be up to 20dB, at the upper end of the audio range or just ultrasonic. Keeping the tonearm cable capacitance down pushes this resonance to a higher frequency which is why tonearm cables are usually low capacitance.

There is noise (and sometimes signal, since any stereo cutter has response to well over 40KHz) and boosted in that manner can overload the input of the phono section briefly with a tick or pop as the result.

So you might want to reconsider that idea that the MM cartridges inherently pick up more surface noise- it might simply be you were playing a phono preamp that had this problem; IME this problem is very common. Many solid state MM phono sections in amps and receivers made in the 1970s and 80s had this issue.

atmasphere's avatar
atmasphere
11,632 posts
 

The best explanation came from J. Peter Moncreiff (IIRC) who said that moving magnet/moving iron cartirdges impart a fuzziness to the instruments that is missing from a moving coil.  The effect is subtle, but noticeable as an overall cleaner, more transparent sound.

@jhnnrrs He made a lot of claims but his studies (like you see in IAR #5) lacked the provenance to really know what was going on. For example, for MM cartridges to work right you have to deal with the high inductance they have. That inductance is high enough that the cartridge can ring at audio frequencies, and the inductance in parallel with the tonearm cable can set up an electrical resonance just at the upper end of the audio band or barely ultrasonic. This can mess with phono sections if they don't have a good HF overload characteristic.

So for the study to be valid, the phono section used, the tonearm cable capacitance has to be stated along with the inductance of the cartridge and what was done about it.

If LP playback has a strong weakness against digital, setup is arguably it- with digital its nearly plug and play but if you want the best out of an analog system it has to be set up right/you have to know what you are doing.

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IME the ability of the arm to properly track the cartridge is far more important then what cartridge you have. Some arms are a lot better at this sort of thing than others!

FWIW as reference I use recordings that I recorded, some of which I also mastered to LP.

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