Whats wrong with large filter caps for Gainclone?

[millwood]

If under load, what fequency or frequencies, single or multiple?
Joe R.

probably should be done under random noises with some concentration on the lower frequencies (a pink noise for example?).

 

[millwood]

Re: FFT MEASUREMENT - not simulated

Hi Guys


Joe R.

I think it will be hard to argue, given the magnitude of the noise and its frequency distribution, that a reasonably decent amp with 50db psrr will suffer from an average PS whose fft looks like the one you presented.

 

[sss]

When ever i have built power amps, ive always used large filter caps. How come the gainclone only has 1000uF per channel?
What happens if you use lots of uF's in a gainclone

yup , that was the original question 🙂

well Mesh,
did u ever think why a simple op amp circuit doesnt need a 10000uf filter caps ?
thats because the size of the filter caps is depended on power output .Most chip ams are rated at < 50W so less capacitance needed , plus chip amps got good psrr and low "on" current .
One more reason : those chip amps are intended for applications that require small space ,thats why in the application notes u see small filter caps , this is the minimum size required .
there is nothing wrong with using large filter caps for any amp but too much wount do any good eather .