MM to MC back to MM

I grow weary of those who add nothing to a good thread. But sometimes, every once in a while, I come across something so astonishing, that I have to barf, clean off my keyboard, and post a reply.

In Mr. Audiofeil's list of failed audio businesses, I noted one in particular:

Fisher.

Dude, you need a vacation! I'd recommend New York City. Take in a concert by the New York Philharmonic. The building in which they perform is named after that failed business man.

Cheers.

In reply to Ctm the output impedance for the Denon is 40 ohms and for the Ortofon 800 ohms according to the cartridge database.I had the Denon loaded at 100 ohms.I tried other loadings with it 47 ohms,220,1Kohm that had been suggested but the 100 ohms manufacturer's suggested was obviously more correct.The Ortofon went through the same stage's MM side with 100pf.The stage I'm using now has a 45Kohm with 300pf setting.This is just about what the VMS 20 prefers as most MM stages are 47Kohm.The Ortofon used to have a little clip-on device to vary the capacitance if you so desired but I have never seen one.So what I can say is that I heard the Denon in a lot of guises and got to know it quite well.I stand by the Ortofon as a "poor man's Koetsu".I think that the Linn K 18 Mk 11 MM must rank as one of my favourite cartridges. It was the one that initially woke me up to the fact that MM's can go stride for stride with MC's.That was only with an elliptical stylus too.I hear it doing even more now with a conical stylus.The level that is way past the "silky" epiphets.It plays the record.The other night I played some English Beatles pressings through the right channel to listen to the stereo mix.It was perfect for every nuance.I don't want to tell you how long I have not heard these records.

Jsman - Thanks for posting your questions. It highlighted this very important discission of determining if one can objectively evaluate a MM vs. a MC cartridge.

Congratulations on your new TT purchase. I am glad you started a new thread to obtain more MM and MC cartridge suggestions. The cartridges already mentioned in this thread are great starting points. Let us know your findings.

Stefanl - I was referring to the voltage outputs of each cartridge @ 1Khz, 50 mm/sec. From the informative database, the Denon DL103 is a MC unit whose output ranges from 0.12 - 0.3 mV vs. 5.0 mV for the moving iron Ortofon VMS-20 E Mk II.

I originally thought your phonostage is one that is either a MM or a MC. I see now that the phonostage you are using has a MM and a MC section. Thanks for clarifying. So essentially the capabilities of your phonostage is the same as that for Eldartford and others whose phonostages have a MM and MC settings. One of my phonostages also has this capability.

What is your phonostage? It would be interesting to know the design of its MM and the MC sections. I also want to know to what extent you have investigated that the performance of both sections is identical so that neither the MM nor the MC stages introduce an effect that confounds the MM vs. MC comparison. In other words, how do you know that the differences you hear when comparing MM and MC cartridges are only due to the distinct sonic signature of each cartridge? In my original post and in my responses to Eldartford I listed some of the difficulties one runs into when trying to objectively interpret the results of a MM vs. a MC cartridge comparison.

I would jump at the chance to AB MM/MC cartridges the way we can with cables and PCs, for example, with all other components being equal. In such evaluations only one variable changes -- the unit being investigated -- for a true apples-to-apples comparison. For other components like CD players, for example, it can also be done. However, it is not as simple because of the need to be sure that the volume levels are the same for each unit.

It would be great to hear from the designers.

Respectfully,

Ctm_cra...For clarification...the Tandberg preamp has two complete phono preamps built in. I don't think this is common, although there may be others. One approach is the have an additional booster stage that the MC goes through before the MM circuit, or the gain of the phono circuit can be changed by switch setting.