Need help With Pi Filter For Power Amp!

[fastcat95]

Hello To All:

I have a B&K ST140 power amp, and am exploring ideas
to improve the power supply. The supply consists of the
usual full wave rectification and a pair of 17000 uF 75VDC
filter capacitors feeding the boards. My questions:

1. Could I do better with a "Pi" supply filter to improve
the ripple rejection without sonic problems?
(capacitor/resistor/capacitor)

2. If so, how would I go about deciding the values of the
2 capacitors (in uF), and the value of the resistor?

Any help or references here would be greatly appreciated!

Thanks in advance!

fastcat95

 

[Conrad Hoffman]

IMO, the resistor will cause a voltage drop during sustained passages. Probably better to consider a choke, but I've never tried it on a solid state amp.

 

[Cloth Ears]

Try these.