Marantz CD63 & CD67 mods list

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poynton said:
I think the rule should be to split the 25000uF or whatever into several smaller caps of different sizes.
That way the resonant frequencies are spread and the ESR is lowered.

This is similar (????) to the way the 4-terminal cap works and also slit-foil caps.

Hi Andy

This article provides some light in the matter. I already new that different caps have different resonant freqs... Now I am wondering the extreme difficulty in calculating the several cap sizes to be fitted in parallel in order to reach a linear response curve.

Before this I have been studying passive crossover design and found similar problems.

There are too many variables because we are dealing with a very large bandwidth 20 - 20000hz or more.

I experimented a lot while modding the CD53 and built several analog psu´s and found that it is very difficult to parallel different smoothers without compromising the sound linearity.

Note: In the case of the digital psu´s, I found great improvements using this tech.

Can you please comment on my findings ?

Ricardo