Pass Pearl 2 / recommended power supplies

[Renton76]

Hi there,
I´m just planning to build a Pass Pearl 2 and am wondering which power supply to use. Is the AMB Sigma 11 a good solution or can I get the same results by using a simpler one.
Many thanks and best,
Rents

 

[Zen Mod]

if you're going in to trouble of building dedicated PSU , then go to shunt reg route

 

[Renton76]

thanks zen, which one would you recommend the sima11 single rail or the sigma22 dual rail psu?

 

[Zen Mod]

links ?

 

[bnorrish]

It is pretty easy to do the PSU as Wayne shows in his PDF on the passdiy.com website using point to point wiring. I had a spare diode board from the diyaudio.com store Universal PSU board. The rest was wire, solder, terminal blocks, wire nuts, hot glue to secure the big caps.

 

[bnorrish]

A little bit of a hack job but it works.

 

[bnorrish]

Also there is minor error in the PSU diagram. See attached from 6L6. Missing ground between bridges.

 

[Zen Mod]

thanks zen, which one would you recommend the sima11 single rail or the sigma22 dual rail psu?

links ?

just realized that you're asking again about Sigma

they're series regs

that isn't what I recommended

if going that way - just make original Pearl PSU

 

[PKI]

ZM, what about Salas SSHV2, or it will not work here?

 

[omishra]

I am building simple unregulated CRC filter for on-board 7824/7924 series regulators of Pearl-2 board. Using MUR8xx diodes with 22-0-22 r-core transformer.





This is very basic and generic power supply. Component values could be experimented for different caps and resistances.

 

[Zen Mod]

ZM, what about Salas SSHV2, or it will not work here?

Salas's regs are good and I recommend them in PM , when OP asked

I'm not familiar with their nomenclature , but Salas is da man to ask , when trivial things as current and voltage setting for Pearl , is in question

 

[6L6]

Remember that the Pearl 2 has a fully regulated supply and lots of capacitance onboard, the outboard PSU is made to get the transformer physically away from the RIAA, and to keep the noisiest part of the PSU (switching and the ripple caps) also away from the sensitive circuits.

If you are going to do a shunt reg (which would be nice, no doubt, and I'm fairly sure someone has done one with the Salas Low Voltage shunt reg, with good results) you will need to remove the onboard series regs, not just make the outboard PSU fancier.

 

[kamis]

Salas's regs are good and I recommend them in PM , when OP asked

I'm not familiar with their nomenclature , but Salas is da man to ask , when trivial things as current and voltage setting for Pearl , is in question

Did you try Pearl with your Shunty reg/p.s?It is strange when power supply designer recommends competitors product.

 

[kamis]

Even the most active forum member got tired sometimes.

 

[Siberia]

ZM, what about Salas SSHV2, or it will not work here?

SSHV2 is high voltage. You need a pair of low ones.

Here's a constantly renewable group for PCBs and kits: http://www.diyaudio.com/forums/group-buys/188974-gb-thread-salas-sslv1-1-bib-shunt-reg.html

Here's a thread to ask questions:

http://www.diyaudio.com/forums/power-supplies/192625-sslv1-1-builds-fairytales.html

Here's what a Pearl II part would look when with shunts:

 

[Zen Mod]

Did you try Pearl with your Shunty reg/p.s?It is strange when power supply designer recommends competitors product.

few guys from Vaterland already tried Shunty with their Ono and Xono ; I made necessary parts value changes , same as necessary change in Ono local regs area (Shunty for Ono schm enclosed , while edited Ono schmtc , which I'm having - is too clumsy to post here) ; in fact - there were few more iterations of Shunty , one of them cruising at more than 550mA programmed current per leg , and feeding some wakoo AR2's creations

well - I recommend both Salas low voltage reg and Shunty , in PM ( and precisely in that order ..... just because Shunty is more complex , if nothing else )

both will work , for sure ;

don't ask me which I like more

I'm somewhat shy , when propaganda is in question