SMPS for Zen/First Watt amps?

[Baard]

Hello

Regarding: SMPS600RS from Connex.
For the ease of use, I wonder if I can use this SMPS for Zen v9 or F3 clone? It’s a single supply and adjustable to 46 volt. As an inexperienced DIY’er, this SMPS solution would help me a lot if it’s an acceptable way to go.

Next question: If so, do I have to use one SMPS600RS pr. channel?

Here is the specifications for SMPS:
http://connexelectronic.com/wp-content/uploads/2017/09/SMPS600RS.pdf


Baard

 

[Stanislav]

Looks like:

1. it will work OK
2. one SMPS should be sufficient for both channels.
3. if it's cheap enough use one per channel for better separation (consider mono blocks)

 

[Baard]

Thanks

 

[mbrennwa]

My Aleph J runs off two SMPS supplies (one for each rail). Works well and sounds good!

I used CLC filters to block the residual high-frequency switching noise. I don't think it makes a huge difference to the sound, but I can sleep better.

 

[Stanislav]

Zen V9 and F3 already include Cap Mx , check the circuit diagrams.
That means high freq. switching noise is reduced to practically non-existant.
Plus an additional soft start feature.

CLC or CRC filters will not work with every SMPS, some will become unstable and shut down.
Now RCRC might be a better proposition.
The CapMx as in Zen V9 / F3 is a better option IMHO.