I ordered the blue board too, as my build is not complete yet. I still have a couple of DAC boards to go yet. Seemed a whole lot easier, and neater to just have the blue board from the start.
I did notice the VAT removal during the process, once it figured my USA address. It was nearly that added back on for shipping though. My board is on the way already.
I did notice the VAT removal during the process, once it figured my USA address. It was nearly that added back on for shipping though. My board is on the way already.
Hi.
Can anyone that's done the half clock delay mod tell me where they got the little smd pcbs from please. Also where could I get some of the silver wire that links the dac modules as I'm sure I'll destroy mine whilst desoldering it.
Many thanks, Si
Can anyone that's done the half clock delay mod tell me where they got the little smd pcbs from please. Also where could I get some of the silver wire that links the dac modules as I'm sure I'll destroy mine whilst desoldering it.
Many thanks, Si
the ones Ross used looked ideal. I didn't find them until after I got mine.
these ones
3pcs SMD CONVERTER/ ADAPTER PCB - SOIC14 LGA14 to DIP14 | eBay
wires.co.uk - specialist in craft wire, knitted craft wire, silver wire, enamelled copper, resistance wires, stainless steel, plated wires and many more! is pretty good for stuff like the silver wire. Not sure if they do exactly the same, but they'll have something close
Yes, I am getting mine without. Approx 24 euros less. The blue board is lots more expensive. Oh, well, you only live once, thankfully, who could afford to live more than that?
You pay for the whole thing then they credit you for the clock. This was done very quickly. I asked why the choice is not there to get the board without the clock.
I guess, as Bones13 mentions, by the time the freight and handling charge are applied I thought they had neglected to delete the tax.
Wish I had paid better attention and not have made my accusation.
That's a great price. Wonder how long it takes to get them?
Browndog in the US has a board they sell for more money. Though you would get them quicker and not much more money since they can be mailed in a letter envelope. This would be of interest, I would think, only to those who live here.
Getting Browndog's 28 pin adapters to make an easier to modify DAC. Narrow/wide SO to 28-pin DIP Adapter (p/n 031102A) - get to try out SMD soldering. Now that so few components are needed (referring back to the battery power scheme) - I think this might be easier to deal with for those who want to try changes.
Now to figure out how to implement a ground plane ...
Hey Rick,
You could ask a moderator to remove or edit the posts you are referring to.
Chuz,
Drew
You could ask a moderator to remove or edit the posts you are referring to.
Chuz,
Drew
I made my confession of hasty stupidity a few posts down from the original. I hope that is sufficient. I worried that if it was removed there might have been folks who had seen it and without my subsequent mea culpa might have thought what I said was true.
Plus, it is good to wear the hair shirt on occasion!
Thanks for the suggestion, nonetheless!
Take care,
1/2 Clock delay parts
rickmcinnis & Undarra,
The "3pcs SMD CONVERTER/ ADAPTER PCB - SOIC14 LGA14 to DIP14 | eBay" takes 3-4 weeks to ship from Asia.
I have some extra adaptor board pairs and 74VHCxxxx chips that I can send you for $7.00usd plus shipping. You will have to get the caps and 100 ohm resistor. For wire I used Ethernet CAT 5e which has 4 twisted pairs of 24ga solid wires which are good for over 100MHz. You should be able to buy this by the foot (or meter) locally. Send me a PM if you want this.
Definitely get the blue board if you haven't bought a main board yet. There is no way to make this mod pretty. I hope that Doede will upgrade the red board to include these two chips or have a stripped down version of the blue board without the SPDIF and clock. Adding a reclocker to the main board would be another improvement step.
Ross
rickmcinnis & Undarra,
The "3pcs SMD CONVERTER/ ADAPTER PCB - SOIC14 LGA14 to DIP14 | eBay" takes 3-4 weeks to ship from Asia.
I have some extra adaptor board pairs and 74VHCxxxx chips that I can send you for $7.00usd plus shipping. You will have to get the caps and 100 ohm resistor. For wire I used Ethernet CAT 5e which has 4 twisted pairs of 24ga solid wires which are good for over 100MHz. You should be able to buy this by the foot (or meter) locally. Send me a PM if you want this.
Definitely get the blue board if you haven't bought a main board yet. There is no way to make this mod pretty. I hope that Doede will upgrade the red board to include these two chips or have a stripped down version of the blue board without the SPDIF and clock. Adding a reclocker to the main board would be another improvement step.
Ross
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dont pay ten dollars for adapter boards
loads of alternatives
Prototyping Board - SOP16/SOP28/SSOP28
Appreciate the advice but the cheaper ones I found would not save me much after "freight".
I have bought stuff from these folks before and their quality is first class.
AND they are in my possession. Tonight I attempt SMD soldering ...
Addition:
Took a look - the BROWNDOGs have holes drilled on the edges which will make them much easier to use. Those are very cheap!
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if you reeeeaalllly want i can sell u adapter boards at $10🙂
well they will ship 12 boards for 10ish dollars
fair enough there not tip top quality but for testing there fine
It's no great drama if you have a steady hand and an iron that's not too big. For chips like these, I tend to pop a bit of solder onto each pad on the board, then pop the chip in place and tag 1 corner down, then do the opposite corner pin. Then you can go round and tag the rest down.
Good luck!
I got the chance for a proper listening session with my dac last night and this clock delay mod really does make a good improvement. That combined with my shunt regs, buffer output stage driving the cinemags, choke power supply and silmic and OSCON caps on the boards makes for a truly wonderful musical experience now 🙂 It's really brought everything together and it's totally come into its own now. I've always been pretty impressed by what's possible with this, but now. Just wow. It's totally at another level.
I'm pretty close to declaring this finished and putting it all into a couple of nice cases. 1 for all the mains power supplies and 1 for everything else.
DDDAC1794 WaveIO DAC glitches and stuttering
Hello,
When I connect the DDDAC 1794 to my Windows 7 PC's USB and listen to the sound via JRiver 20. I hear glitches and stuttering.
I have installed the latest driver from WaveIO V2.23 and also earlier versions. They all seemed to be installed okay, but with no effect on the disturbances.
Is there anyone who can help me?
regards, Peter van Doornum
Hello,
When I connect the DDDAC 1794 to my Windows 7 PC's USB and listen to the sound via JRiver 20. I hear glitches and stuttering.
I have installed the latest driver from WaveIO V2.23 and also earlier versions. They all seemed to be installed okay, but with no effect on the disturbances.
Is there anyone who can help me?
regards, Peter van Doornum
DDDAC1974 Xmos driver settings
Yes, I tried but with no results? Have you ever heard of tusbaudaudioapi.dll not being installed after I tried to execute dfucons.exe?
regards, Peter
Yes, I tried but with no results? Have you ever heard of tusbaudaudioapi.dll not being installed after I tried to execute dfucons.exe?
regards, Peter
Do you have the same problems with other simple players and may be another pc ?
To me it seems your player cannot keep up getting the music data due to other overhead, low buffer settings inside the player or may be a slow network when using a NAS box or usb drive
To me it seems your player cannot keep up getting the music data due to other overhead, low buffer settings inside the player or may be a slow network when using a NAS box or usb drive
Then 1 final mod I've just made was to add a wire to join the ground from my Raspberry Pi power supply to the star ground for my dddac power supply and this has killed off the last bit of hum and buzz I had, so I'm pretty pleased with the improvement there, certainly for the cost and time involved 🙂
I'd definitely urge others who have a couple of different power supplies to give that a try running extra wires joining all the grounds together to a point in the case before they get to the dac. It's probably common practice, but hadn't occurred to me until just now and it's just taken the noise floor right away so the silences are truly silent.
Man it's sounding good now
Has anyone who's changed their dac regulators to shunt regs or similar experimented with running wires and star grounding the grounds from the regs straight back to the power supply ground rather than going via the boards? Nige mentioned it a while back and I've been wondering....
I'm getting a headache branstorming about that.
I'm reading very interesting things about earthing, ground, etc...
But I still don't know what to do !
Anybody to comment on star grounds ?
Beside that, what happened to Stefan (Supersurfer) ?