pimp my PSU or not to pim my PSU?

[f.pelosa]

hello,
I'm planning to build a Leach Amp, and I'm now working on the PSU.
My question is whether it's worth to invest some bucks for a better engineered PSU.

Considering it's a class AB amp, would one of the two following option be more appropriate than the standard "transformer - rect. bridge - cap (1x 10000uF per channel)" approach?

The two other options I have in mind are these:

option 1:

An externally hosted image should be here but it was not working when we last tested it.

option 2:

An externally hosted image should be here but it was not working when we last tested it.

Thanks a lot for your help
Ale

 

[Salas]

We see no pictures. Please upload them as 1024X768 in this server.

 

[f.pelosa]

Mh.. how can I show the pictures directly in my message?
Anyway, these are the direct links to the pictures.
option 1:
psu option 1
option2:
psu option 2

Thanks again
Ale

 

[f.pelosa]

Can you see the pictures now?
Any suggestion on which PSU to build?

 

[Salas]

Mh.. how can I show the pictures directly in my message?
Anyway, these are the direct links to the pictures.
option 1:
psu option 1
option2:
psu option 2

Thanks again
Ale

When composing a post there is an attach files area with a 'manage attachments' thing when you scroll down.

 

[Salas]

Can you see the pictures now?
Any suggestion on which PSU to build?

Yes now we can see those. To say something we should know more about the amp I guess. Wattage, bias. No2 looks more sophisticated anyway.

 

[f.pelosa]

it's a Leach Amp.

 

[Salas]

That is a 120W per channel amp I think. The second PSU has better diodes and the small resistor plus parallel 4.7mF capacitors are nicer. I would avoid C9/C10.

 

[hm4nine]

The second supply is the better one, but you should decrease the series resistors to 0R22 which will be much smaller than the typical power supply effective resistance. It can have a remarkable effect on reducing ripple and high frequency noise content. And use lots of capacitance after these resistors for reducing the corner frequency of the resulting low pass.