18V phono preamp (super) regulator

arlekin · 30th January 2011, 11:52 AM

Can someone please suggest +/-18V regulator for phono preamp?

I would go with the Jung/Diden super regulator but it seems that opamps can't handle that much voltage.

AndrewT · 30th January 2011, 12:38 PM

Use a Salas type Shunt regulator.

There are many threads extolling the sound quality that results from adopting the Salas.

martin clark · 06:37 PM

There's no problem at all using a Jung SR at those voltages - you need one for +ve which is supplied from+ve raw supply to 0v, and one for negative, supplied from -0v raw to 0v. With only minor care (such as watching disspation in parts and heatsinking) you can use Jung superregs to supply well over +/-30v.

Take the time to read the documentation on Walt Jung's homepage:

Walt Jung - Regulators

- there is much pertinent information given, whichever route you choose.

arlekin · 11:05 PM

Yes, I have read some of the articles, and considered mounting the heatsinks on the opamp, but the 18V output seemed to much of a stretch for the AD817. I thougt that the regulator will loose some of the good characteristics that way.

I will try the Super Regulator then (since I've done them before), but now I'm intrigued with the Salas.

Thanks!

30th January 2011, 11:52 AM	#1
arlekin diyAudio Member Join Date: Jan 2006 Location: Sibenik	18V phono preamp (super) regulator Can someone please suggest +/-18V regulator for phono preamp? I would go with the Jung/Diden super regulator but it seems that opamps can't handle that much voltage.

30th January 2011, 12:38 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Use a Salas type Shunt regulator. There are many threads extolling the sound quality that results from adopting the Salas. __________________ regards Andrew T.

30th January 2011, 06:32 PM	#3
martin clark diyAudio Member Join Date: Jul 2003 Location: Bath, UK	There's no problem at all using a Jung SR at those voltages - you need one for +ve which is supplied from+ve raw supply to 0v, and one for negative, supplied from -0v raw to 0v. With only minor care (such as watching disspation in parts and heatsinking) you can use Jung superregs to supply well over +/-30v. Take the time to read the documentation on Walt Jung's homepage: Walt Jung - Regulators - there is much pertinent information given, whichever route you choose. Last edited by martin clark; 30th January 2011 at 06:37 PM.

30th January 2011, 10:44 PM	#4
arlekin diyAudio Member Join Date: Jan 2006 Location: Sibenik	Yes, I have read some of the articles, and considered mounting the heatsinks on the opamp, but the 18V output seemed to much of a stretch for the AD817. I thougt that the regulator will loose some of the good characteristics that way. I will try the Super Regulator then (since I've done them before), but now I'm intrigued with the Salas. Thanks! Last edited by arlekin; 30th January 2011 at 11:05 PM.

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