F4 Psu help needed please !

[thor61]

Zen Mod, You are a blessing to this forum ! I will follow your advise to the letter again many thank's

[Zen Mod]

naah ......

there is no need to make me happy ( what already I am , in excessive amount ) ;

go here : FIRST WATT ARTICLES , download them all (print or not ) and read .....

that will make you happy

[d to the g]

Originally Posted by Zen Mod

......
http://www.diyaudio.com/forums/attac...su-layout-.jpg

I disagree with this. The lines are too straight.

[Zen Mod]

I give you all rights to make them either curvy ...... or fuzzzzzzzy

[thor61]

How about 4) CL60's Hope this is correct ! F4 Final Layout.jpg

[Zen Mod]

even if 1 common CL60 is adequate for 400VA toroid , second one can't harm

your call

[Dzius]

Are the 2x18V AC secondaries enough ? We can get lower than 23V after filtering.
Or better to have 2x20V ?
In BA articel Nelson says: " our goal is to have approximately +/- 25 volts on the supply rails. Voltages from 18 to 30 volts are acceptable"
Is the 25 V a little better than 23V in the F4 ?

[Zen Mod]

it doesn't make much difference , because most speakers are current hungry , so few volts can't change much

reason for discrepancy is simple - say that 18Vac is industry standard , same as 24Vdc is industry standard

these two are the "same" when PSU isn't heavy loaded ,as it certanily is in A class amp duty

so - just sort of contextual talk