>  I have seen in the auto shops or similar, 1 Farad capacitors for extra
>decoupling of the battery in automotive Hi-Fi systems.  These are the
>size of an 850g tin of vegetables with decorative gold plating on
>various parts and *include* a power indicator LED!
>
>  Insofar as I assume, they simply incorporate an array of standard
>electrolytics, which may be rated for low ESR/ high ripple, they may do
>something close to what they propose, though I have great suspicions of
>anything offered for this market.
>--
>  Cheers,
>        Paul B.


One wonders why they don't put the C on the amplifier instead.
The input is 12V, which means that a 1F cap has 72j stored, but with a huge
inductance and resistance.
Inside the amps, they switch the DC input up to +/- 35V or better.
Adding the caps at that point, where 0.5*C*V^2 works out so much better,
would seem an obvious and large improvement. Much smaller C, much more "punch"
As a final injury, putting those huge Cs on the input means that their
current to the load is limited by the amp's switcher as well as their own
internal L and R.

Dumb, Dumb, Dumb....