I think your problem is that the 570 Ohm resistors provide virtually no PSU rejection so the noise from the LMs can enter.
Here is a version that substitutes the resistors with constant current sources.
Watch only the constant current sources because this is the SMD version.
The CCSs can be used nevertheless.
The transistors can be BC327, 337 or even BC550, 560.
You can try 1kOhm and 100 Ohm instead of 680 Ohm and 68 Ohm. That will lower the noise from the CCss somewhat although the version shown works well enough too.
Here is a version that substitutes the resistors with constant current sources.
Watch only the constant current sources because this is the SMD version.
The CCSs can be used nevertheless.
The transistors can be BC327, 337 or even BC550, 560.
You can try 1kOhm and 100 Ohm instead of 680 Ohm and 68 Ohm. That will lower the noise from the CCss somewhat although the version shown works well enough too.
Attachments
CCS will improve your PSU noise rejection by a significant amount.
Joachim,
Interesting experiment on my masterpiece.
Basically I noticed that final sound is really affected by the quality of your batteries.
I was able to clearly notice it when I upgraded my cables to the top MIT Oracles.
I was really surprised to hear how a battery could affect the final performance.
A cheap battery will just sound slow more grainy, lack of body less extension on the bass!
I was really surprised as I thought that battery wouldn't contribute much to the sound.
So in short hope this helps understand people here who use battery that they will affect final sound as well.
Joachim,
Interesting experiment on my masterpiece.
Basically I noticed that final sound is really affected by the quality of your batteries.
I was able to clearly notice it when I upgraded my cables to the top MIT Oracles.
I was really surprised to hear how a battery could affect the final performance.
A cheap battery will just sound slow more grainy, lack of body less extension on the bass!
I was really surprised as I thought that battery wouldn't contribute much to the sound.
So in short hope this helps understand people here who use battery that they will affect final sound as well.
Yes, i think so too. It was quite a shock to hear Andrejs version of the Paradise with the hugh tube regulators. It had much more slam and drama then the already good standard version with Frans shunts. Tonal colors where much better too. A clarinet sounded more like a clarinet for example. There was more air and space.
My reference for batteries are buffered lead acid cells that are made for caravans and medical. When you short circuit such a cell you get such high current that a 1qmm wire is easily evaporated.
My reference for batteries are buffered lead acid cells that are made for caravans and medical. When you short circuit such a cell you get such high current that a 1qmm wire is easily evaporated.
My favorite batteries are Cyclon batteries for military and medical application.
I was thinking about standard supply, however I don't see how this could be better on a phono than a battery powered.
Standard supply will require extra $$$$power cord to perform too which nowday is extra money that I would rather avoind on stupid cables.
In there any reason why a tube PSU would sound better than a fast diode based PSU?
Do you prefer that over battery power?
One thing I do...or don't do...is buffer batteries with Electrolytics.
I rather have a fast 1-2uF Teflon cap by the board.
This arrangement gives a lot of slam to the sound, very fast reponse in the bass and refined highs.
Have you ever tried this arrangement?
Maybe it will make you re-think the tube PSU
Get Cyclon battery, bypass it with a 1/2uF AuraTeflon or V-Cap Teflon cap and use perhaps a different shunt from that by Frans and see what you think
I was thinking about standard supply, however I don't see how this could be better on a phono than a battery powered.
Standard supply will require extra $$$$power cord to perform too which nowday is extra money that I would rather avoind on stupid cables.
In there any reason why a tube PSU would sound better than a fast diode based PSU?
Do you prefer that over battery power?
One thing I do...or don't do...is buffer batteries with Electrolytics.
I rather have a fast 1-2uF Teflon cap by the board.
This arrangement gives a lot of slam to the sound, very fast reponse in the bass and refined highs.
Have you ever tried this arrangement?
Maybe it will make you re-think the tube PSU
Get Cyclon battery, bypass it with a 1/2uF AuraTeflon or V-Cap Teflon cap and use perhaps a different shunt from that by Frans and see what you think
Here you see my so far best PSU effort. the guts of my Opus Magnum Phonostage.
The big silver caps in the pre regulator are teflon.
The coil is a Lundahl common mode choke.
The bridges are 100,-$ IXIS SiCa.
The prices of SiCa has come down though recently.
You also see 4 Sjöström Super Regualtors and there are Ruschkowsky shunts on board.
Locally i have passive RC filters. Caps are Black gate and Silmic. Many resistors are naked
foils and other Vishay metal foils.
Something like this may cost over 25.000,- € in the shop.
This design is ca. 2 years old and i may do some things different today.
I stand behind the topology of the input stage still.
Over why Andrejs tube PSU sounds so good i can only speculate.
For one the tube rectifiers may be even lower ( zero ) in switching noise then the best diodes. Regulation is very simple and based on a special NOS russian zener that was chosen by Andrejs friend in Siberia. I spare you the incredible story how they found it.
Anyway, besides the story it simply sound amazing.
The big silver caps in the pre regulator are teflon.
The coil is a Lundahl common mode choke.
The bridges are 100,-$ IXIS SiCa.
The prices of SiCa has come down though recently.
You also see 4 Sjöström Super Regualtors and there are Ruschkowsky shunts on board.
Locally i have passive RC filters. Caps are Black gate and Silmic. Many resistors are naked
foils and other Vishay metal foils.
Something like this may cost over 25.000,- € in the shop.
This design is ca. 2 years old and i may do some things different today.
I stand behind the topology of the input stage still.
Over why Andrejs tube PSU sounds so good i can only speculate.
For one the tube rectifiers may be even lower ( zero ) in switching noise then the best diodes. Regulation is very simple and based on a special NOS russian zener that was chosen by Andrejs friend in Siberia. I spare you the incredible story how they found it.
Anyway, besides the story it simply sound amazing.
Attachments
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Tube PSU
I do not have an exact schematic of his build but it is quite easy to understand when you see the pictures :
It is not even double mono so it still has potential.
I thought that the Paradise Shunt is not possible to beat but this changed my mind.
Impossible for a commercial product though.
I do not have an exact schematic of his build but it is quite easy to understand when you see the pictures :
It is not even double mono so it still has potential.
I thought that the Paradise Shunt is not possible to beat but this changed my mind.
Impossible for a commercial product though.
Attachments
woo it looks amazing!!! What is the schematic for the PSU you werea amazed by?
I don't know who Andrejis is and I would be really interested in trying this special supply.
I am still wondering if you prefer battery supply or regular supply (for regular I mean your super supply shown on the picture) or you are deinitely leaning toward a Tube Supply like that one.
EDIT you posted while I was posting mine, so ignore questions that you already answered
I don't know who Andrejis is and I would be really interested in trying this special supply.
I am still wondering if you prefer battery supply or regular supply (for regular I mean your super supply shown on the picture) or you are deinitely leaning toward a Tube Supply like that one.
EDIT you posted while I was posting mine, so ignore questions that you already answered
I already said that Andrejs did not give me the schematic.
Lets see if i can find his website and then you can try to e-mail him.
It is his design.
We did not compare the Paradise on batteries direct with the tube supply but i can hardly imagine that the battery supply is any better.
For one i did not have the Etna when i heard the battery powered Paradise and there where other speakers, not as good as the ones we used on this day.
Lets see if i can find his website and then you can try to e-mail him.
It is his design.
We did not compare the Paradise on batteries direct with the tube supply but i can hardly imagine that the battery supply is any better.
For one i did not have the Etna when i heard the battery powered Paradise and there where other speakers, not as good as the ones we used on this day.
ahahah my next question was what cart is that one? A prototype? How come he has a Lyra's prototype?
Have you heard Atlas?
very interesting.I am now familiar with Tube supply never built one so looking at the picture...at the moment won't be of much help.
If you are looking for a better supply that the one on the paradise, the one I am currently use is giving a big run too.
I am wondering if a Tube supply can be better than my Cyclon with Teflon caps and my supply regulator.
HAvinf a regular supply takes the live cycle of the battery off the picture and also the design of a smar kind of complex power mamagement system, but like I said the conventional supply brings back expensive power cords....
wither way....I end up picking what performs better....and I wouldn't mind try a tube supply...that is the only thing I have never tried so far!
What speakers did he have? What cables did he use? what TT is that?
it looks like he arranged everything pretty well organized
The picture is in my listening room. It is my turntable, a Spiral Groove SG1 with Centroid arm.
Yes the Etna is a prototype that will replace the Titan i that i also have.
I also had the Atlas for a considerable time.
Compared to the Titan i it is more extended at both frequency extremes and even more resolved and dynamic.
Ultimately i prefer the Etna by a small margin though. It is more like older Lyras, very finely honed, incredible resolution of micro detail and space.
It also fits my arm better in fundamental resonance because it is less heavy then the Atlas.
Good that you are happy with your battery supply.
One day when i will build the Masterpiece after your plan i must also try your PSU.
A wall driven PSU would be more convenient though. I myself do not care to go the extra mile and use the batteries when that sounds better. The masterpiece is totally out of this world anyway.
Yes the Etna is a prototype that will replace the Titan i that i also have.
I also had the Atlas for a considerable time.
Compared to the Titan i it is more extended at both frequency extremes and even more resolved and dynamic.
Ultimately i prefer the Etna by a small margin though. It is more like older Lyras, very finely honed, incredible resolution of micro detail and space.
It also fits my arm better in fundamental resonance because it is less heavy then the Atlas.
Good that you are happy with your battery supply.
One day when i will build the Masterpiece after your plan i must also try your PSU.
A wall driven PSU would be more convenient though. I myself do not care to go the extra mile and use the batteries when that sounds better. The masterpiece is totally out of this world anyway.
congratulation you have had very beautidul cartridges.
Hands down to your experience
I agree with you that a wall conventional supply is way more convenient however so far the battery supply sounds cleaner but yet full body but especially feels quiter, darker background.
I would personally be happy to have a standard supply that could be as resolving and colorfull.
If you liked the tube so much it means that is is worth a listening
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