Only for fun, Massimo star ground for Simplistic photo:
Enjoy.
An externally hosted image should be here but it was not working when we last tested it.
Enjoy.
Does the "simplistic star ground" work? 😀
Next step: "star power"
Take a look what's going on and..... enjoy! 😉
Next step: "star power"
Take a look what's going on and..... enjoy! 😉
In this moment I'm up-grading the other channel, I will let you know how works.
I do not have words to describe the impressive work that you have done, congratulations looks very, very good & proffesional.
I do not have words to describe the impressive work that you have done, congratulations looks very, very good & proffesional.
Only a preview..... right side shunt reg is wrong and then still to be checked and debugged.
Moreover it must be tested: the toughest part of the job.
Moreover it must be tested: the toughest part of the job.
I believe that you have anticipated enough your work and that you do not still have it so much, could you telling it is developing?
@massimo & maxpou
Seems that all our new project is 60 dBs, why not share the design & cost to make a professional pcb?
At this moment we are 3.....
Seems that all our new project is 60 dBs, why not share the design & cost to make a professional pcb?
At this moment we are 3.....
Too much trouble and expensive.... at least for me.
Secondly I'm designing my own pcb for my components and case. It won't be "universal" at all.
When tested, I'll publish the layout and everybody can do their own homework 😉
Wich components will you use? because the more problematics for bigger are russian teflon caps interstage, russian mica caps for RIAA and the output cap, the resistors you can left sort the distance & everybody can do the hole for his own lenght resistor, etc.
In the shunt reg: base/grid stopper are cheap carbon 1/4W pitch 10mm, other resistors Dale 1/2W p.12,5mm. Wima caps (possibly) p.27,5 or 37,5mm and Bourns trimmer
In the RIAA: Dale 1/2W p.12,5mm and 1W p.17,5mm. Elcaps Silmic II. RIAA network: teflon caps (pulled out from an old ML phono board) p.17.5 or 22,5mm. Coupling cap: Russian FT-2 (body 20 dia x 52 mm) p.55mm. Output cap: Obbligato Premium (body 25 dia x 50mm) p.60mm. Both mounted under the pcb for minumum tracks lenght (as Disco did in his pcb).
In the RIAA: Dale 1/2W p.12,5mm and 1W p.17,5mm. Elcaps Silmic II. RIAA network: teflon caps (pulled out from an old ML phono board) p.17.5 or 22,5mm. Coupling cap: Russian FT-2 (body 20 dia x 52 mm) p.55mm. Output cap: Obbligato Premium (body 25 dia x 50mm) p.60mm. Both mounted under the pcb for minumum tracks lenght (as Disco did in his pcb).
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In the shunt reg. v1.2 the Wima caps will be MKP 4.7uF?
In the RIAA mine silver mica russians caps are p. 11 mm instead 17.5 or 22.5mm so can be used, coupling teflon caps FT-3 are body 27 mm x 53 mm so will be more or less the same than FT-2 if you do p.55 mm, p. 60mm for output cap allows use several kind of types.
Did you compare Obbligato vs Auricap, Rcruz uses also Obbligato, hear that Mundorf are vey good but are very expensive for mine pocket, actually I use Auricap 3.3uF with good success.
In the RIAA mine silver mica russians caps are p. 11 mm instead 17.5 or 22.5mm so can be used, coupling teflon caps FT-3 are body 27 mm x 53 mm so will be more or less the same than FT-2 if you do p.55 mm, p. 60mm for output cap allows use several kind of types.
Did you compare Obbligato vs Auricap, Rcruz uses also Obbligato, hear that Mundorf are vey good but are very expensive for mine pocket, actually I use Auricap 3.3uF with good success.
I bought a pair of 3,3uF Obbligato Premium because of (or thanks to) Ricardo.
I discovered later that a friend of mine is importing them from HK. He also does Mundorf and he told me that many people who bought them said they "fight" closely against the Silver Gold Oil series for a fraction of the price. Auricap: never tried, but Air Tight uses them and I like their products.
I discovered later that a friend of mine is importing them from HK. He also does Mundorf and he told me that many people who bought them said they "fight" closely against the Silver Gold Oil series for a fraction of the price. Auricap: never tried, but Air Tight uses them and I like their products.
I supposed that you are refering to Obbligato Gold premium aluminum film caps (630VDC) 3.3uF because are the dimensions you said before, aren't expnsive so today I ordered a couple to try & compare vs Auricap.
Acoustic-Dimension, high-end audio and components for tube audio
I also mind that Air Tight are special products with very good sounds almost a little high priced like Audionote.
Acoustic-Dimension, high-end audio and components for tube audio
I also mind that Air Tight are special products with very good sounds almost a little high priced like Audionote.
Yes.
Good idea. Aren't cheaper on eBay?
Air Tight. Once you listen to a pair of 211 mono with NOS GE o/p tubes.... wow!
Even if that schematic isn't exactly my cup of tea.....
Good idea. Aren't cheaper on eBay?
Air Tight. Once you listen to a pair of 211 mono with NOS GE o/p tubes.... wow!
Even if that schematic isn't exactly my cup of tea.....
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On e-bay is DIY-hifi-supply Hong-Kong the seller.
I listened a clone of Audionote Ongaku with a couple of 211 but tubes aren't for me. Mine prefered tube is E34L Tesla configured in triode only 1 tube single-ended class "A" good sound but only a few watts.
No problem, when your PCB is ready let me know exact p.
I listened a clone of Audionote Ongaku with a couple of 211 but tubes aren't for me. Mine prefered tube is E34L Tesla configured in triode only 1 tube single-ended class "A" good sound but only a few watts.
No problem, when your PCB is ready let me know exact p.
