My opa549 amp and opa627+buf634 pre

[Alcaid]

Been shopping at Atek have you?

nice looking amps btw..

Yep
Nice price on those caps.
Also been shopping at Elfa, RS, par-metal, ebay, futulec, clas ohlson and biltema. Reminds me of the daft punk song; "Around the world"

 

[steenoe]

"Around the world"

You have to be a bit international in this game

Steen.

 

[Alcaid]

You have to be a bit international in this game

Steen.

True.
THL Audio next, maybe...

 

[steenoe]

THL Audio next, maybe...

Sure thing Start saving.

Steen.

 

[demogorgon]

Yep
Nice price on those caps.
Also been shopping at Elfa, RS, par-metal, ebay, futulec, clas ohlson and biltema. Reminds me of the daft punk song; "Around the world"

the caps were nice, though i'm using the 10.000uf's at 3\4's of the price. they were nice too..

been thinking of saving the 8200 for my soon to be atempt at solid state: Rod elliots P3A.

 

[steenoe]

Allow me to resurrect this thread for a moment
Alcaid, is it possible to post a pdf of the preamps psu-pcb?
I am starting to make my own pcb's, and would really like to try
your psu, as you know

Steen

 

[Alcaid]

It's posted here:
http://www.diyaudio.com/forums/showthread.php?postid=584101#post584101

The groundplane is made like peranders describes in this thread:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=34785&highlight=

 

[steenoe]

Thanks Petter, I found those. It's the PSU board for the preamp I am after I did search for it, but couldn't find it.

Steen

 

[Alcaid]

Sorry, quick on the trigger....

Here you go:

 

[Alcaid]

And silkscreen:

 

[steenoe]

Thanks a lot Petter. Can't wait to try this layout.
It will be my first self-etched boards

Steen

 

[Alcaid]

Anytime Steen.

It was also my first self-made PCB.
Good luck

 

[steenoe]

I just measured the printout of the PSU, it says 99x57 mm. Is that the korrekt size of the board?

Steen.

 

[Alcaid]

Yepp
99 x 57mm is correct.

 

[steenoe]

So here they are, the first self-etched boards Two of Alcaids regulated preamp-psu boards, among some BosoZ boards.
Turned out pretty good, right away. Thanks Petter.

Steen.

 

[Alcaid]

Looks like you've never done anything else your whole life
Nice work Steen!

 

[jleaman]

So here they are, the first self-etched boards Two of Alcaids regulated preamp-psu boards, among some BosoZ boards.
Turned out pretty good, right away. Thanks Petter.

Steen.

OOOOOOOOOOOOOOOOOOOOOOO lookiiinnn GOODD!

 

[steenoe]

Thanks guys. It is not me being good, its the method that is so easy

Jason, is that your Honda's rpm's on the Avatar?? You'r riding it to the red field?

Steen

 

[carlmart]

.....

What kind of isolation pads are those on the back of the OPA549s? Aren't they too thick to instantly transmit heat onto the heatsink?


Carlos

 

[Alcaid]

What kind of isolation pads are those on the back of the OPA549s? Aren't they too thick to instantly transmit heat onto the heatsink?


Carlos

Those are aluminium oxide with a thermal resistance < 0.3 deg/W
http://www.elfa.se/elfa-bin/dyndok.pl?lang=en&vat=0&dok=2008961.htm