English please.
Reason is to reach the best of possible SNR. Even the slightest pulsations brought to the input of the block, with a gain of 40 dB, will lead to the appearance of noticeable pulsations at the output.
If you are a perfectionist, choose +-18V, but +-15V power supplies are more popular. For myself, I use +-18V, but for demonstration I have a couple of kits with +-15V power. At the same time, the amplifier heats up less.
Reading the entire thread afterwards and in its entirety was extremely tiring, but now I'm extensively "educated" - i.e. in the picture. Nick has reinvented the wheel - and this new wheel is the most beautiful and best wheel that has ever seen the light of day. How much does the kit cost?
It is very unfortunate, Nick, that your article series, your own (late) magazine, is not available to buy in English and edited on the open market. I am very keen to learn from other masters, even as a little West German boy you were our enemies - now we are allies, even friends. What I mean by that is the following: I need a pamphlet in German or English, French. Spanish or Italian would also be nice.
Please don't be mad at me, but I think your current throw should have a catchy name, for example Nicks-MM-Wonder-EQ.
The topology is so ingenious that mere mortals cannot even recognize its ingenuity.
We all are happy to pay the necessary fee for this, or that. The presentation of this kit by the "Artmaster" is simply great.
Please don't be upset, I stand by my word.
Conclusion:
Nothing special, but ok - it polarizes and heats up emotions, that's all about, a little bit boring too.
All the best,
HBt.
It is very unfortunate, Nick, that your article series, your own (late) magazine, is not available to buy in English and edited on the open market. I am very keen to learn from other masters, even as a little West German boy you were our enemies - now we are allies, even friends. What I mean by that is the following: I need a pamphlet in German or English, French. Spanish or Italian would also be nice.
Please don't be mad at me, but I think your current throw should have a catchy name, for example Nicks-MM-Wonder-EQ.
The topology is so ingenious that mere mortals cannot even recognize its ingenuity.
We all are happy to pay the necessary fee for this, or that. The presentation of this kit by the "Artmaster" is simply great.
Please don't be upset, I stand by my word.
Conclusion:
Nothing special, but ok - it polarizes and heats up emotions, that's all about, a little bit boring too.
All the best,
HBt.
Last edited:
Dear Artmaster ("nicht ursprünglich aus der Stadt Erich Kästners, oder?")!
Thank you for your invitation "Artmaster" and I don't want to seem rude, but a listening visit is not necessary.
But you ask how you can help me - for all the readers of this forum, I think it would be very good if grandmasters would share their secrets in detail. Especially when it comes to basic discrete circuits as in this case.
The choice of components, their values and the operating points of the active stages. Personally, I am missing well-founded explanations as to the why.
You have already done something in this direction with your joint video conversations and call it a masterclass-course.
You are still a bit too far away from a proper circuit description, at least in my eyes.
And as you both know, it's like school: unfounded answers score zero points. Assertions and answers without justification or proof are worth very little.
Videos in a foreign language are also worth nothing. Nick speaks perfect English (read somewhere in this thread), then it would be wise to produce your videos (chat) in that language.
The constant reference to the automatically generated subtitle option is annoying. Personally, I can only stand the nonsense that this function reveals for a maximum of 90 seconds.
DIY should spread JOY,
please be (Nick Sukhov) more open and friendly - don't take criticism personally, but objectively - and above all, accept it.
In this way you can help everyone and make friends,
HBt.
Thank you for your invitation "Artmaster" and I don't want to seem rude, but a listening visit is not necessary.
But you ask how you can help me - for all the readers of this forum, I think it would be very good if grandmasters would share their secrets in detail. Especially when it comes to basic discrete circuits as in this case.
The choice of components, their values and the operating points of the active stages. Personally, I am missing well-founded explanations as to the why.
You have already done something in this direction with your joint video conversations and call it a masterclass-course.
You are still a bit too far away from a proper circuit description, at least in my eyes.
And as you both know, it's like school: unfounded answers score zero points. Assertions and answers without justification or proof are worth very little.
Videos in a foreign language are also worth nothing. Nick speaks perfect English (read somewhere in this thread), then it would be wise to produce your videos (chat) in that language.
The constant reference to the automatically generated subtitle option is annoying. Personally, I can only stand the nonsense that this function reveals for a maximum of 90 seconds.
DIY should spread JOY,
please be (Nick Sukhov) more open and friendly - don't take criticism personally, but objectively - and above all, accept it.
In this way you can help everyone and make friends,
HBt.
Last edited:
Addendum
The title of the thread suggests something really great, please explain this miracle in detail. An A-weighted SNR of 85dB is nothing special, nor is changing the equalization slightly ..! doesn't explain this miracle to me, explain it to everyone else - and leave room for modifications by the kit buyers, because that's what this is all about.
The MAKERS want to do it themselves and you both want (only) to sell the kit.
I wish you both all the best in the new year 2024,
HBt.
Psst.
I believe you without a doubt that the EQ does a very good job and the sound exudes magic.
The title of the thread suggests something really great, please explain this miracle in detail. An A-weighted SNR of 85dB is nothing special, nor is changing the equalization slightly ..! doesn't explain this miracle to me, explain it to everyone else - and leave room for modifications by the kit buyers, because that's what this is all about.
The MAKERS want to do it themselves and you both want (only) to sell the kit.
I wish you both all the best in the new year 2024,
HBt.
Psst.
I believe you without a doubt that the EQ does a very good job and the sound exudes magic.
You are right. Nick doesn't tolerate any objections. You can understand him - he is an engineer, not a marketer. In my opinion, he outlined in sufficient detail the advantages of his solution and its differences from the known solutions in this discussion. I tried to simplify them and put them together - please read it if you haven't seen it yet.
1. Constant loop gain for no THD both @ LF and HF,
2. No coupling capacitors at all, MC-like sound with MM cartridge thanks to
3. aperiodic non-resonant HF correction with lowest input capacitance.
Thanks to that, the unwanted resonance of the input circuit is shifted far into the ultrasound region and does not manifest itself in the audio range, and the input resistor R1 can be increased to 150 kOhm, thus forming a "passive cooling", which reduces the input noise current in SQRT (150 kOhm / 47 kOhm) = 1.78 times compared to typical Rin = 47 kOhm.
4. At the front end uses a matched pair of Dual, ultra-low noise, low-gate-current audio N-channel JFET -the latest JFE2140 from Texas Instrument. It's allow to achieve a record IEC-A weighted signal-to-noise ratio of 85 dBA relative to a standard 5 mV@1 kHz input level with an attached 0.5 H+ MM head equivalent. 1 kOhm
5. and THD less, then 0.00006% with fantastic overload capacity (64 mV@1 kHz < 0.0007%).
6. The frequency response exactly corresponds to the Enhanced RIAA not with three, as usual, but with five -time constants, in addition to 75 + 318 + 3180 µs, a Neumann pole compensator and a rumble -reducing 7950 µs - IEC 98 Amendment are also implemented.
7. Double differential stages scheme : high PSRR , but stabilized bipolar +-(15-18)V power supply with low ripple is required
The preamp board must be installed next to the tonearm to ensure the stated performance
The maximum benefit can be obtained by analysis of the circuit using Micro-cap 12 - NIk posted the files for this somewhere.
I have not idea what else can be said about this, regardless of the language.
PS: Nick and I were born and lived in Kyiv, Ukraine......
Last edited:
In order for the parameters of phono stages to be compared with each other, they must strictly comply
with the regulati ons established in parti cular by IEC 61938. In this case, the input of the device should not
be short-circuited, but should be loaded onto the equivalent - for MM this is a circuit consisti ng of
inductance 500 mH, in series with a 1 kOhm resistor and a capacitance of 125 pF connected in parallel to
them. For MC - 10 Ohms. The nominal input signal level for the MM is 5 mV, for the MС - 0.3 mV. Noise
parameters must be A-weighted.
Actually, I don't want to say anything more about a colleague's work; and dear "Artmaster" (you are obviously an old school friend of Nick, I have the utmost respect for real friendships, love and passion), you don't have to answer for Nick here either, he can do that himself - but it's a bit difficult to leave the assertions about this circuit uncommented.
What does the number 1 mean in plain language ("Klartext")? I don't think that a language barrier or the translation alone is the problem here, but specialist technical knowledge- and language. But I can think of something suitable - without this (my own) specialist knowledge and the ability to decode, it would just be nonsense.
Likewise!
Likewise!
It hurts my heart, but this complete sentence is absolute nonsense - even if what it's supposed to say is okay!
There is a discussion thread about this, that topic - and the points of view differ.
Since the current is inversely proportional to the resistance value (or also proportional to the conductance), this statement is even correct when comparing two resistances alone - but it is also so-called eyewash.
Nothing new, but perfect - I absolutely agree with that.
The whole equalizer preamplifier:
I agree with that too. Unfortunately, this point isn't anything outstanding either.
Let's round it:
0,0001% (Uo=1,4Vpp) till 0,001% (Uo=18Vpp) without a load-resistor at the output, it is possiple, ok.
This point is very interesting, please take a closer look at (in detail) the transferfunction of the entire feedback-net.
This is where opinions will really differ and I myself would welcome an open discussion with Nick about this.
Just for the sake of clarification, especially because these are fundamental questions about basic circuits. Nick won't be too shy to do that.
The first question that pops up is already what is a "double differential stage" for Nick?
The power supply issue is a whole separate topic.
It goes without saying that this circuit should not be supplied with a completely unregulated voltage.
Absolutly right and honest.
I think Nick wants money for the file.
But this is already completely irrelevant, because the point is something else.
Nick should prove his claims with measurements, please no incomprehensible video - and that his own standards are very high, please be a bit more professional.
That was all you could do to support your friend and express your excitement about the new sound of your record player.
Your enthusiasm is sincere and a pleasure.
With kind regards,
HBt.
Last edited:
You are totaly right. You don't have to understand this. This material is intended for people with at least a secondary education.
So forget about this device and celebrate the new year.
I pray to God that Nikolai doesn’t see this discussion because even for me it’s a nervous shock
"Lieber User Artmaster,
scheinbar verstehst Du mich falsch, deshalb versuche ich es jetzt zweisprachig.
Mein abschließender Satz ist ein Kompliment und der Ausdruck das ich mich für Dich freue.
Warum ausgerechnet Ihr beide jetzt einen Schock erleiden solltet, kann ich nicht nachvollziehen.
Tut mir leid.
Freundliche Grüße,
HBt."
Dear User Artmaster,
you seem to have misunderstood me, so I'm going to try it bilingually.
My final sentence is a compliment and an expression of how happy I am for you.
I can't understand why you two people should suffer a shock now.
I'm sorry.
Kind regards,
HBt.
Psst.
I never said that your circuit is bad. However, it is obvious which clientele you want to address, unfortunately there are also others on this board. Some of them keep their mouths shut or are overly politically correct, others are a bit more open - and interested in a technical discourse, for the good of all. So there is no reason to react angrily or even be offended.
scheinbar verstehst Du mich falsch, deshalb versuche ich es jetzt zweisprachig.
Mein abschließender Satz ist ein Kompliment und der Ausdruck das ich mich für Dich freue.
Warum ausgerechnet Ihr beide jetzt einen Schock erleiden solltet, kann ich nicht nachvollziehen.
Tut mir leid.
Freundliche Grüße,
HBt."
Dear User Artmaster,
you seem to have misunderstood me, so I'm going to try it bilingually.
My final sentence is a compliment and an expression of how happy I am for you.
I can't understand why you two people should suffer a shock now.
I'm sorry.
Kind regards,
HBt.
Psst.
I never said that your circuit is bad. However, it is obvious which clientele you want to address, unfortunately there are also others on this board. Some of them keep their mouths shut or are overly politically correct, others are a bit more open - and interested in a technical discourse, for the good of all. So there is no reason to react angrily or even be offended.
Last edited:
This is not my circuit. This is Nikolai Sukhov's circuit. The facts presented in the discussion do not need your comments. I ask you to be politically correct and no longer comment on my posts, do not notice me at all
I apologize, it is indeed Mr. Sukhov's schematic / case.
In our cases, facts only become facts through metrological evidence.
But you don't want to forbid a user on this board from posting a comment, do you?
Nick's further development of the original Kenwood design is perfectly fine, nothing special, but certainly interesting. The problem is not the circuit - dozens of other users have already shared their comments before me, so there's no need to say anything else.
It's about biodiversity, it means quality of life - translated to our cute little circuits, simply diversity.
Have you seen the latest "Pearl" No. 3 by Wayne Colburn? It follows a completely different concept and is huge.
I will gladly comply with this request.
Goodbye,
HBt.