Pavel Dudek's (Upupa Epops) LM4780 amp

[peranders]

Pavel, your schematics has been downloaded 220 times. EDIT: 9191 times 2004-09-20!

From that I can see a lot of curiosity. Several of us have stated that this design is a case of good solid engineering. For instance the Zobel network and output filter are put into focus. Safety is also at top priority even though it may not be totally necessary due to all internal protection of the LM4780.

Schematics can be found here

[dhaen]

Nice Project
It does somewhat separate the men from the boys .....

[peranders]

Did you notice the absence of esoteric parts. This can't be high-end. In fact, it must be rubbish.

[moe29]

Wow... really nice work.

Is Upupa Epops a pro, or just highly advanced DIYer?

regardless, thanks for sharing.

m.

[Jan Dupont]

I have known Pavel for some short time....
He is absolutely a Pro

[zygibajt]

Pavel Dudek is very well known amplifier designer.
At least in Poland every audiophile knows his name,his amps are on the covers of audiophile magazines and in rankings and they are considered one of the best at their price range.

Bartek

[officeboy]

He doesn’t exactly belong to the “minimal parts” school of though does he?

[mandat]

Yes, he is very good amp designer but he is outstanding designer of PCBs. Have a look at PCBs layout and the way of elements arrangement. Dear DIYs try to notice the beauty of proposed PCBs and let's follow him.
I think that Upupa epops was not a bird but an architect or a sculptor in previous life.
http://web.telecom.cz/macura/dpa_386.pdf
http://web.telecom.cz/macura/dpa_222.pdf

[Upupa Epops]

I like very much precision work ( when I see motors from Mascom, my soul is singing ) ). I mean, that good designed PCB is base of well working machine and when is it at this time nice too, your enjoy will be more than twice . Work on good designed PCB spend only little bit more time then work on worse one. Little joke : devices get to know it and theirs reward is adequate - good function . Do you can to know my design philosophy, not only PCB's ?

[Peter Daniel]

Originally posted by dhaen
Nice Project
It does somewhat separate the men from the boys .....

Originally posted by peranders
Did you notice the absence of esoteric parts. This can't be high-end. In fact, it must be rubbish.

I'm not sure what some of you mean by those comments, but Pavel's board reminds me very much of a board I made 10 years ago. It was very precise and without any exotic components

http://www.diyaudio.com/forums/attac...&postid=411988