But the inductance of a low output moving coil is so low that resistive damping has little effect, as in a nutshell the inductor does not ring at audio frequencies or anywhere near themBut what I meant is the mechanical damping of the stylus, not electrical damping of the LC tank.
Cartridge loading
Presently I am using a ZU/Denon DL103 mc cartridge with ZU Audio's highest tolerances. I had this cartridge mounted on my VPI Prime and after going through all the various loading combinations, I settled on 200 ohms. I was always satisfied with my choice of setting. I no longer have the Prime and now use the Technics SL1200G turntable. After having the same cartridge mounted and aligned by the dealer, I inserted it into my system and enjoyed the sound immensely, never touching the 200 ohm setting.
Yesterday I was listening to vinyl most of the day and for some reason I found the sound to be better than ever, mostly in the treble area. The highs had shimmer when needed and I had played the same records many times before on the Prime and they never sounded as good as they did yesterday. Just for the heck of it, I checked the cartridge loading and found it was now set at 1000 ohms. As I said, when I put the Technics into the system, I never bothered changing the loading which was at 200 ohms as it was the same cartridge, just a different turntable.
I believe I know what happened, when I last used the tone controls on my McIntosh preamp, (you have to shuffle through a menu) I must have inadvertently put the cartridge loading at 1000 ohms. It truly sounds fantastic, better than I ever thought possible. The Bass is still very deep and taut, midrange is the same but the treble, oh my, so much better. Now the million dollar question is why should it now sound better at 1000 ohms, when it sounded great before at 200 ohms? Can the tonearm on the Technics have an effect on cartridge loading? I always thought it was all dependent on the preamp, amp and speakers. What am I missing here? I am very curious to know. The specs for my cartridge say greater than 50 ohms for loading.
Thanks
Yesterday I was listening to vinyl most of the day and for some reason I found the sound to be better than ever, mostly in the treble area. The highs had shimmer when needed and I had played the same records many times before on the Prime and they never sounded as good as they did yesterday. Just for the heck of it, I checked the cartridge loading and found it was now set at 1000 ohms. As I said, when I put the Technics into the system, I never bothered changing the loading which was at 200 ohms as it was the same cartridge, just a different turntable.
I believe I know what happened, when I last used the tone controls on my McIntosh preamp, (you have to shuffle through a menu) I must have inadvertently put the cartridge loading at 1000 ohms. It truly sounds fantastic, better than I ever thought possible. The Bass is still very deep and taut, midrange is the same but the treble, oh my, so much better. Now the million dollar question is why should it now sound better at 1000 ohms, when it sounded great before at 200 ohms? Can the tonearm on the Technics have an effect on cartridge loading? I always thought it was all dependent on the preamp, amp and speakers. What am I missing here? I am very curious to know. The specs for my cartridge say greater than 50 ohms for loading.
Thanks
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- 190 posts total
Dear @atmasphere : Really? because I read all your posts and after several years you never posted true evidence/facts that can tell us that " cartridge limit trace of high frequency ". You can do it very simple: take 2-3 LP tracks and give us as examples of your posts and in this case we can have first hand experiences about because till today in no single audio forum in the web no one and I repeat no never posted that kind of trouble. With all respect: bla, bla, bla, etc is not enough with out true foundation in your statements. Why don't give us those LP examples? easy to do it. Of course that we need to know the different loads you try it and with which of those loads " things happens ". I think that many gentlemans as me already made it that kind of tests and that's why insist that you bring here those facts. Please no more bla, bla but facts that we can corroborate it. Regards and enjoy the MUSIC NOT DISTORTIONS, R. |
rauliruegas I read all your posts and after several years you never posted true evidence/facts ... You can do it very simple: take 2-3 LP tracks and give us as examples of your posts ... bla, bla, bla, etc is not enough with out true foundation in your statements. Why don't give us those LP examples? easy to do it ... that's why insist that you bring here those facts. Please no more bla, bla but facts that we can corroborate it.No one here is obligated to conduct any tests on your behalf. Please feel free to conduct your own tests, though, and share your results with the group. |
But what I meant is the mechanical damping of the stylus, not electrical damping of the LC tank.Yes. If you pass a squarewave through an inductor, the more inductance there is the more it will ring; If you then place a resistance in parallel with the inductor this will cause it to ring less. When the resistance is the right value, the resulting output signal will be the closest you can get to a square wave. This resistance value is the 'critical damping' value for the inductor. But LOMC cartridges really don't ring at audio frequencies. Now we can conclude from this that the damping of the coil is irrelevant except for the tank circuit, and the latter is of no importance unless the phono preamp has troubles with RFI at its input. But damping of the mechanism (cantilever and suspension) is a different matter, and its pretty safe to conclude that if it is damped, high frequencies will be attenuated. There are plenty of examples of this. But I'm not sure how important this is. If the cartridge is properly set up in the arm and the arm is able to track the cartridge correctly, **and** if the phono preamp is unresponsive to RFI and is also inherently stable, then IME the stock 47K load has yielded the best results. I do think its an interesting topic though and think it bears more research. |
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- 190 posts total