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Old 14th November 2008, 09:08 PM   #241
Salas is offline Salas  Greece
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Quote:
Originally posted by Thomo
Just a thought, but I could easily build a Sulzer/Borbely type voltage reg into the layout of the board.

Would be nice to discover how good the Salas reg posted above is first though.

I will try and get a stereo board etched tomorrow and test.

Cheers, Lee.
That Sulzer/Borbely voltage reg will be very silent non the less.
You mean something like in this thread ?
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Old 14th November 2008, 09:22 PM   #242
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by salas


OK, here you are.
Thank you so much Salas.
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Old 15th November 2008, 01:10 AM   #243
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Default Salas 'pacific' style RIAA

Thx Lee for the layout. I will probably go with point to point for now until I gel down what sounds best.

Salas- I guess the Salas 'pacific' style RIAA from post 110 is now out of date? I ordered all my parts for that schem already.

How does this new one in post 236 compare?

-Kent
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Old 15th November 2008, 01:15 AM   #244
Salas is offline Salas  Greece
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No it is not outdated. Its totally comparable. Proceed with confidence. The PSU choice will make the biggest difference.
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Old 18th November 2008, 03:16 PM   #245
Salas is offline Salas  Greece
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Good news. My proposed shunt works straight away without any problems. Initial impression is a substantial lift in musical detail. Will evaluate more and enhance the Vref (Zener) with its own CCs and extra cap.
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Old 18th November 2008, 04:53 PM   #246
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Salas,
You beat me to the punch, as I just got around to testing the shunt-reg. Yes it works as designed. So everyone is safe using it as-is. I was also thinking about adding the CCs for Vref and bypass.
I have deveated from your design a little bit (as I'm a tube guy at heart) and replaced the second stage with a CCs 6DJ8 and a Mosfet follower (ala NYAL and Joe Curcio). Yes you can run the 6DJ8 at this low voltage. I was running a whole RIAA tube design on 24 volt battery. I also use a pair of fets and cascode for the first stage (kinda like the pearl design) to lower the noise. When I get it all sorted out, I will post a schematic.
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Old 18th November 2008, 06:38 PM   #247
Salas is offline Salas  Greece
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Good. Hope it sounds cool too. Does the trick in my case.
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Old 18th November 2008, 06:59 PM   #248
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HI SALAS

For +/- Psu ?
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Old 18th November 2008, 07:29 PM   #249
Salas is offline Salas  Greece
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Have to mirror it, its easy. I have no use for a -V in my RIAA though.
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Old 18th November 2008, 10:56 PM   #250
jam is offline jam  United States
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Salas,

Just a thought, try 1uF at the output of the regulator in place of 2200 uF.

Jam
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