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Old 10th February 2009, 04:29 PM   #1001
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I also want to extend to Salas my thanks for sharing this project. I've been lurking on this thread for quite a while now, and am definitely planning on implementing this phono stage.

Great work!

Terry
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Old 10th February 2009, 10:22 PM   #1002
RCruz is offline RCruz  Switzerland
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Soon I will join the "experienced" ones

All resistors in place (had to deviate a little from Lee´s layout to acomodate the uge 1M kiwame).

Promising.....

Just a little question.. I know my version has a buffered output and my intention is to do the following path:

Riaa -> 50k dual log pot -> Pedja Buffer -> Meridian 103 power amp.

Is this a good idea ? I just want to avoid the 101b opamp output stage but I am a bit confused....

Regards

Ricardo
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Old 10th February 2009, 10:52 PM   #1003
Salas is offline Salas  Greece
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The Pedja has a better chance of sounding more transparent than the 101b I guess. But you just have to compare. Maybe you will need 101's gain. I would set up phono-101-103 first. After all has burned in, and familiar with, I would listen VS phono-pot-Pedja-103.
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Old 11th February 2009, 12:23 AM   #1004
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Go Ricardo, Go!

Got the k40y-9 PIO russian caps today, in the .15u value. They're burning in
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Old 11th February 2009, 02:08 AM   #1005
Salas is offline Salas  Greece
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Quote:
Originally posted by metalman
I also want to extend to Salas my thanks for sharing this project. I've been lurking on this thread for quite a while now, and am definitely planning on implementing this phono stage.

Great work!

Terry
Thank you for your kind words. Good luck with your planned build. We will be happy to know your experiences and tunings when ready. What is your TT, arm, cart and rest of system right now? Already having a phono? DIY?
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Old 11th February 2009, 10:33 AM   #1006
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by salas
The Pedja has a better chance of sounding more transparent than the 101b I guess. But you just have to compare. Maybe you will need 101's gain. I would set up phono-101-103 first. After all has burned in, and familiar with, I would listen VS phono-pot-Pedja-103.
I will do just what you sugested Salas.

Firstly I will feed the Salas Riaa through the 101, maintaining the 101 gain.

After that I will build a dedicated pre based on the pedja.

Nevertheless I am glad to know you did not find any issues in using riaa + pot + buffer.

Ricardo
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Old 11th February 2009, 08:45 PM   #1007
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by ikoflexer
Go Ricardo, Go!

Got the k40y-9 PIO russian caps today, in the .15u value. They're burning in
Hi ikoflexer

What value are you using for C1 ?

I have a russian k40-9 0.047 there but looking at the photos previously posted, these seems so small

Ricardo
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Old 11th February 2009, 08:49 PM   #1008
Salas is offline Salas  Greece
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C1 you mean the one that couples to the second stage?
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Old 11th February 2009, 08:53 PM   #1009
Salas is offline Salas  Greece
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If you mean that one after the RIAA that goes to the 1meg to earth and second JFET's gate, then 47nF to 150nF will do. Center is 100nF. The response will still go subsonic with all of the above. No problem.
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Old 11th February 2009, 11:20 PM   #1010
RCruz is offline RCruz  Switzerland
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Almost done..... left the jfets and big output cap for tomorrow

Ricardo
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