My first DAC - another DDDAC1543 is born

[pburke]

Thanks everyone here for helping me out over the last few months. Without this forum, this DAC would not exist (actually, I built two of them, one for a friend and one for myself).

Biggest thanks to Doede Douma for sharing his design and providing instructions and support whenever I needed them.

Here's how it went:

http://didnt.doit.wisc.edu/audio/dddac1543/dddac1543.html

So what's next? I'm about to mod a Toshiba 3950 as a dedicated transport for this DAC. I may use some battery power, a custom chassis, etc. it's just going to take a while because I keep listening to music rather than to mess with solder and voltmeter...

Peter

🙂

 

[Andypairo]

Wow that's nice!
I assume you made the boards yourself using Doede's layout.

Do the chips get that hot to need a fan?
I heard that there are around 2 different TDA1543 types, one of which has less current consumption..

Cheers

Andrea

 

[rbroer]

I heard that there are around 2 different TDA1543 types, one of which has less current consumption..

Hello Andrea,
remember this thread ?

http://www.diyaudio.com/forums/showthread.php?s=&postid=299865&highlight=#post299865
It mentions some differences between several TDA1543's.

 

[Andypairo]

Yup, that's it.😉

Thanks Rudolf.

My Dacs are from Reichelt and I feel no need for a fan.

Cheers

Andrea

 

[pburke]

they run at 8.5 volts and get pretty hot (the copper heat sink is hot to the touch) but they do work without the fan. Blowing a little air over it (the fan runs at the absolute minimum speed) keeps them totally cool, though. I can run the DAC either way, which is why I have a switch for the fan. Still, 0.5amps are going mostly to that stack of chips in there.

I don't know where these chips come from since I got them from Doede together with the PCB.

Peter