Does size really matter?

[pm1961]

Has anybody tried these huge Caps targeted at the auto market?

http://www.carstereoworld.com/caps.html

With the promise of huge capacitance and miniscule ESR, do they have any relevance to the kind of PS we strive for?

If not, why not?

pm

 

[LesW]

The trick is not merely to store electrons but to get them to move when required. The problem with overly large caps is inertia - you know, where the bass performance begins to plod.............

 

[martin clark]

For a start they're all rated for nominally 12v use, which rather limits alternative applications. I also suspect such caps will have large leakage currents, which will make them noisy, and the production tolerances on large electrolytics is cr*p; typical capacitance in range of 1Farad -20%, +80%. ESL could be 'interesting' too with such a large, wound component- which is one aspect of the problem LesW alludes to.

Best leave them to the Bass Disposal Squad.

 

[mcai7et2]

On the subject of caps, what are the best caps for preamp supplies. I have a maplin "audio grade" 10,000uf 40V cap running my preamp supply at the moment, as a purely temporary measure. I plan to upgrade the supply with a 317TPR module and a much better cap once my system has settled down.

Cheers,

Ed