[guzzler]

it's unfortunate the boards are so expensive, although by the looks of it they are well made. There was a discussion over at diyAudio about a valve buffer (which is what I'm looking for) but I couldn't see how to implement the 6DJ8/6922 at a low voltage and I don't really know anything about valve design, which probably contributes something to that fact

anyway, as I said, fine job all

g

 

[Nisbeth]

If anyone has information about how the tube/valve buffer on Scott Nixon's TubeDAC is done, I would also very much appreciate it

/U.

 

[jboehle]

What power supplies are you guys using for your DIY DACs?

-Jason

 

[Nisbeth]

12V SLA at the moment. Working on a suitable external supply

/U.

 

[setmenu]

Listening at the mo.
There is definitely 'something' about the sound

.
Can,t quite explain ,voices...
Probabaly measures like crap but still..
The portable system seems to sound err ..wonderful

ugh, cant concentrate on typing,,music..is..


Here,s the bottom view.


Setmenu

 

[jboehle]

Are those little brown things SMT resistors?

-Jason

 

[setmenu]

Capacitors

Setmenu

 

[was ist los?]

Where can i get copper plate like that in the U.S.?

 

[jboehle]

You might try contacting Percy Audio to see if he sells just the copper plate that the Alpha Core inductors are made out of. I remember someone mentioning that in the past but I can't remember where they said they got the raw Alpha Core plate from. However, it might be too thin for this purpose. Just a thought.

-Jason

 

[was ist los?]

On further inspection, it could be copper tape since i can see the protoboard's holes throught the copper. Also, where i imagine the tape was cut, setmenu soldered the peices together.

 

[setmenu]

The copper is 35micron thick foil sourced from a company that
produces flexible laminates.
It was joined to the board with pressure from a soldering iron
bonding it to the pre-tinned pads on the board.

Setmenu

 

[kheldar]

what company did you get your toslink input from?

 

[setmenu]

Arrow electronics

 

[Voodoochile]

Hi Mark-

That looks great (*super* tight layout), and it sounds like the performance is all there, too. Nice. Is this your first revision, or have you been fiddling with a few prior versions?

I particularly like your comments about how it might possibly measure versus how it sounds. Got your priorities right

.

 

[setmenu]

Quote:

Originally posted by Voodoochile Hi Mark- That looks great (*super* tight layout), and it sounds like the performance is all there, too. Nice. Is this your first revision, or have you been fiddling with a few prior versions? I particularly like your comments about how it might possibly measure versus how it sounds. Got your priorities right .

Hi
I blame you for getting sucked into this stuff

.
This is my first 'scratch built' diy audio circuit, prior to that the only
audio electronic thing I had assembled was your Pimeta prize.

So yes, this is my first 'revision' of the dac.
I am pretty pleased with the sound,there is less HF energy than I
am used to.
Perhaps the sound can now be considered less CD like?
I have read that some consider these dacs to have a more
analogue sound..


Before I mess with further versions I would like to make a compacted version of the Pimeta to share the enclosure with
the dac.
That means I will have to work out how to connect the two
together when sharing a single battery, virtual grounds etc..

Cheers

Set...Mark