Re: Size of power supply capacitors
- From: bjacoby@xxxxxxxxxxx
- Date: 15 Dec 2005 23:27:16 -0800
I don't get the big argument here. In the world of power supplies, if
you've got the money and the space, more capacitor is always better.
(Ok, there is an issue with inital startup surge, but you'd have to
have truly huge capacitor to overload the diodes and transformer that
way) The fact that the amp came factory shipped with values half the
companies own spec is a very bad sign to begin with. And for that
matter be sure to check the peak voltage on the filter caps. You don't
want the max voltage of the caps too close to the peak supply voltage
(high line voltage, no signal etc.). You want some buffer range there!
With a 52 volt resting voltage and 63 volt caps you are ASKING for
trouble! Personally, I only get the warm fuzzies when the cap rating is
twice the resting voltage!
If it were my amp, I'd rip out the factory caps and install some 100
volt caps twice the original factory spec value. As someone noted, it
is really easy to try by just wiring in the additional caps temporarily
to make sure the amp is happy with the new values.
Benj
(Who warns to be VERY careful with polarity and voltage ratings. An
exploded filter cap really makes an amazing mess in a piece of gear!)
.
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