btw.. anybody know if it would be possible to feed the Deck Boards Left/Right Adjusted Signal directly from Ian's I2StoPCM converter board ?
I don;t know specifically about Ian's reclocker, but it has proved possible to use something like the BBB Botic driver to output the 2 data channels for left and right in the correct format for the deck boards and therefore do without the main board. I am very interested in this, but I have yet to try it
What is the best way to add dac boards to existing one? Unsoldering current one seems to be pain in ***.
However stacking additional boards to currently soldered might have negative influence, because straight wire connecting all boards will have lower resistance than adding additional boards by soldering them to existing connections.
However stacking additional boards to currently soldered might have negative influence, because straight wire connecting all boards will have lower resistance than adding additional boards by soldering them to existing connections.
What's the best way? A good desoldering station..You'll get used to it after the 10th time.., sooner if you have a >4 deck stack. 😉
Going through this thread, I noticed a post in 4/2015 about a prototype DSD DAC that Doede was working on. I am curious to know whether this project is still ongoing or not. It would be great if Doede can share some info. on that.
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don't worry, I did disassemble 8 stack DACS, juts by cutting the wires close the the solder joint and after repair (what was the reason) resoldered all wires back to the original joint with a Little extra drop solder. I did not found anything negative....
OR use a desoldering Iron. I have one too (need it for regular repairs on through hole components) Still, that is not easy as well and a lot of work. It looks better afterwards. But is the most important you need to ask yourself?
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😀 I have prototypes, but i am NOT satisfied.... so I am in actual design phase II for a new set up. Also not 100% sure which way to go (means what compromise to take, as there are always compromises to be made...). Looking for extra brainwaves 😛 If you want to this really GOOD you need to be very creative, believe me... The existing solutions with CHIPS (internal converting to PCM) are not an option. Also directly filtering the digital signalwith opamps or even straight out of the actual digital signal after flip flops (interprating the digital signal as an analog one) are also not an option. It sound nice till good, but I know it can be done better. Just did not had te final hunch. Will take some time. My JOB is somewhat busy with travel around the world 😱
Thanks for the update, Doede. It is good to know you continue to find developing that idea worthy of pursuing. Will look forward to the outcome of that project whenever you decide it is ready.
I have ordered the FIFO with I2StoPCM. I will try the setup by directly feed the Decks with Left/Right Data from PCM board. I will report my results here 🙂
Hi all I am about to build a 4 board upgraded dddac. Is someone able to provide a link to the wire needed to connect all the dacs together, thanks
Hook up Wire
Many options here....
Hook up Wire & Foils | Hifi Collective
...DDDAC uses silver hook up wire FYI
Many options here....
Hook up Wire & Foils | Hifi Collective
...DDDAC uses silver hook up wire FYI
Thanks chaps, is it 0.5mm or do I need thicker?
HGC 99.999% pure silver wire, 0.5mm diameter. | Hifi Collective
HGC 99.999% pure silver wire, 0.5mm diameter. | Hifi Collective
Hi, just stack the boards and connect ALL pins from mainboard 'through the boards' to top most board of stack.
http://www.dddac.com/pictures/pics1794/construction_large_04.jpg
Is this a Sowter TVC used as output stage with variable gain (here)?
I have discussed this idea with Doede a while ago, and he argued that these TVCs are not designed to cope with DC, so might produce excessive distortion.
Comments?
What do you mean with DC? Direct current? Because any transformer is a DC filter?
Best Regards,
Hermann
Gesendet von meinem Nexus 5 mit Tapatalk
Yes, DC = direct current. But I am NOT referring to the power supply filters. I was looking at the output transformers.
The output transformers by Doede are specifically designed to take some DC without saturating. The ones on the picture of post 3802 are different, and I believe they are Sowter TVCs. I don't think they are designed to cope with DC and the associated saturation, but it would be super cool if they would work well in the DDDAC output, because that would allow volume control!
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Thanks Marcus
It's the diameter of the wire I'm trying to work out, it measured the connecting wire on the DAC I made last year and it looks like 1mm
Oh, sorry i don't get the point
You are right it seems to be 1mm... btw. layout data viewer download available on Doede's 1794 Page.. see screenshot attached...
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Oh, sorry i don't get the point
You are right it seems to be 1mm... btw. layout data viewer download available on Doede's 1794 Page.. see screenshot attached...
Thanks Marcus, I didn't realize this info was on the Website, Many thanks