[sdiy] Opinions on Switchmode PSUs for analog synths?

Michael Zacherl sdiy-mz01 at blauwurf.info
Thu Oct 31 02:32:07 CET 2019


similar thing for the Rhodes Chroma: http://www.rhodeschroma.com/?id=spsukit
m.

> On 31 Oct 2019, at 01:54, Adam Inglis <21pointy at tpg.com.au> wrote:
> 
> This guy is making a replacement PSU for the Jupiter 8 that has got me tempted…
> 
> https://synthronics.de/roland-jupiter-8-new-psu/
> 
> You can see the block schematic down the page. There is a LDO linear regulator after the negative 15 v supply, but not the positive 15 or the 5 v supply. He claims “no audible noise”.
> 
> This would reduce the heat from the old jupe enormously, however, I’m wondering what might be the downside… noise being one, but also, how long do these things last, compared to nearly 40 years for the original supply, and how easy are they to troubleshoot and repair ??  etc







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