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Old 14th March 2010, 11:32 PM   #3221
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Ricardo the RIAA caps & resistors are these?

R3 47K
R4 6K8
R5 1Meg
C2 47nF
C3 16nF
C4 100nF

N.B. These are not mine values, are the schematic values.
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Old 15th March 2010, 12:15 PM   #3222
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Some photos with the setup configuration with NO HUM:

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Click the image to open in full size.
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Old 15th March 2010, 12:24 PM   #3223
Salas is offline Salas  Greece
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Now I see it, yesterday many of the pics got lost from host. OK, much better than the very first assembly. Remote sensing later will work towards cutting losses of the shunt to channels power cabling. Did you get the chance to listen more now that we have cleaned the background harmonic noise?
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Old 15th March 2010, 12:52 PM   #3224
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Yesterday night I listen more, now all solder & components are news so I have to be patient to get full potential of the phono, is really interesting our subjective opinion: first all seems good because we are with the expectative that our project sounds, after when you hear a couple of LP our opinion change & you listen the sound more close like less definition but LP after LP every time sounds better. One important thing to me that I am accustumed to precision metal film resistor like Caddock (used a ot of by Erno Borbely)combined with the tantalums Shinkoh (mine own selection after test with Vishay S102K soun less metalic than Caddock) is the new sound of Takman carbon film combined with mine preferred Shinkoh: is much less aggressive, sibilant, butcher other people will consider that sound is more laid back or soft, as always the rest of our system & our personal taste will be our final choice for resistors, for electrolityc capacitors I haven't changed mine opinion: 1st BG, 2nd Elna Silmic II & after the others.

If you do the one million dollars question about resistors wich be mine final setup?

1st If possible all Shinkoh
2nd Shinkoh combined with Takman carbon film

I never hear the news Charcroft naked Vishays so I can't judge about his sound but the price is very high, possible I will try with specific & critical applications like load or feedback.

Sorry for this brick of subjetivisme.
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Old 15th March 2010, 01:00 PM   #3225
Salas is offline Salas  Greece
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If you shoot for best subjective tunings, all Shinkoh I would prefer. Else, Shinkoh for load and 47k, rest bulk foils. No need to be naked, there are a few more ppm normal axial cheaper Vishays. Still costly combinations and not easy to source. You need fix VTA, Rem.sens.(critical for having more detail), not now, when with 2nd reg, channel level matching, substitution for real R1 after matching, run in, then surely you go for specific parts with different evaluation, final data. All the specific Russian caps used are smoothies mind you, though not ''covered''. The Auricap goes that way a bit more. Maybe you would like an Obbligato or Mundorf Supreme there. What is your exact measured value for 16n position? How is it combined with added cap? DL103R is smooth too. We can tweak the 16n for a bit more detail or smoothness feel. Ricardo I am sure will help you much on tunings by the way.
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Old 15th March 2010, 01:53 PM   #3226
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by merlin el mago View Post
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Ricardo the RIAA caps & resistors are these?

R3 47K
R4 6K8
R5 1Meg
C2 47nF
C3 16nF
C4 100nF

N.B. These are not mine values, are the schematic values.
Yes.... these are what I need.
Can you send me the real values ?
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Old 15th March 2010, 03:07 PM   #3227
RCruz is offline RCruz  Switzerland
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IMO, kiwame (koa speer) are much more subtly detailed than takman. I also like metal film but not here.

I found that the relative values of the riaa components are more important than the resistor / cap types.

Let me know the real values and after we sort it out we can finetune the other components on the shunt.

I have three builds ... two of them are already finetuned and the sound is powerfull with loads of bass, creating a wide soundstage filled with fine speedy detail.

One of them is beeing tuned right now.... The dificulties are finding the correct values on the market...
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Old 15th March 2010, 03:55 PM   #3228
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Salas:
I like that you prefer Shinkohs like me. Yes when 2nd reg running I adjust both channel measuring voltage levels, replace mine loveled trimmer R1 for resistor with exact value, also I do the same for 50R trimmer R6 I will replace for resistor with exact value.

About film caps, mine experience said like for eletrolytics caps, more volts better caps independently of trade mark or type, for example I prefer one Auricap 1500V over a Mundorf silver or gold in oil 100V of course both with the same capacitance value.

Salas & Ricardo, RIAA caps:
-16nF is 15n60 Russian + 330pF + 68pF (all silver mica) both channels so only need 2pF that are ordered togheter the Tx
-47nF at this moment only 1 cap silver mica in each channel, Left 46,3nF Right 46,4nF, I ordered more silver mica caps to reach the needed 47nF
-100nF, Left 99,5nF, Right 99,4nF, some ideas to reach the 100nF?

Ricardo asap RIAA resistors values.

Last edited by merlin el mago; 15th March 2010 at 03:58 PM.
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Old 15th March 2010, 04:06 PM   #3229
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Quote:
Originally Posted by RCruz View Post
IMO, kiwame (koa speer) are much more subtly detailed than takman. I also like metal film but not here.

I found that the relative values of the riaa components are more important than the resistor / cap types.

Let me know the real values and after we sort it out we can finetune the other components on the shunt.

I have three builds ... two of them are already finetuned and the sound is powerfull with loads of bass, creating a wide soundstage filled with fine speedy detail.

One of them is beeing tuned right now.... The dificulties are finding the correct values on the market...
I never hear Kiwame so can't judge, several people said that Riken sounds very good but are expensive I never heard them, do you hear the Riken

Click the image to open in full size.

Parts Connexion is introducing the new resistor AMTRANS, looks nice:

Click the image to open in full size.

Parts tell than are superior to Riken....

Yes the components are a world apart & if you want exact values or good components are expensives & difficult to get.

Asap resistors values for RIAA
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Old 15th March 2010, 05:03 PM   #3230
Salas is offline Salas  Greece
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Quote:
Originally Posted by merlin el mago View Post

Salas & Ricardo, RIAA caps:
-16nF is 15n60 Russian + 330pF + 68pF (all silver mica) both channels so only need 2pF that are ordered togheter the Tx
-47nF at this moment only 1 cap silver mica in each channel, Left 46,3nF Right 46,4nF, I ordered more silver mica caps to reach the needed 47nF
-100nF, Left 99,5nF, Right 99,4nF, some ideas to reach the 100nF?

Ricardo asap RIAA resistors values.
Hmm, with 46.4nF and 46.3nF and Auricap, just disconnect 330pF+2pF from the 15n6 and tell me your opinion.

100nF is just coupling not Riaa and its enough.
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