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A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
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Old 1st November 2014, 08:59 AM   #3391
dddac is offline dddac  Germany
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Quote:
Originally Posted by davidevinavil View Post
Hi Doede, I would to know if your NOS dac will play 44.1 khz 16 bit or must be 24 bit?
actually it plays any bits ;-) I tried with my AP also 12 bit 18 bit etc. it does not matter. yes 16 goes
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Old 1st November 2014, 09:02 AM   #3392
dddac is offline dddac  Germany
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Originally Posted by dwjames View Post
Yes, I'm very pleased. I was getting very confused... I've been listening to it with 5v all today while I worked and it sounds great, but hopefully i can find the time soon to do a proper side by side comparison with a 3.3v reg soon.

Have you had any joy with your latest ccs option?
Just before any one blows up his DAC ...

The 5 Volt is only to be applied on the I2S bus signals. So the Regulator on the Mainboard.

Do not change the 3,3Volt on the DAC boards to 5 Volt. the PCM1794 will die

Also no change for the WM8804 regulator (for the blue boards), here is already 5 Volt on the I2S bus by the way.

In doubt, check the ciruits you can download from my site
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Old 1st November 2014, 10:47 AM   #3393
davidevinavil is offline davidevinavil  Italy
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Quote:
Originally Posted by dddac View Post
actually it plays any bits ;-) I tried with my AP also 12 bit 18 bit etc. it does not matter. yes 16 goes
So this what mean?
I would apply I2S from Raspberry diectly to shift register and play 16 bit
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Old 1st November 2014, 11:25 AM   #3394
dwjames is offline dwjames  United Kingdom
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Quote:
Originally Posted by davidevinavil View Post
So this what mean?
I would apply I2S from Raspberry diectly to shift register and play 16 bit
Yes, you can wire directly from the rPi out to the i2s of the dddac. Only 4 wires and works very nicely

Quote:
Originally Posted by dddac View Post
Just before any one blows up his DAC ...

The 5 Volt is only to be applied on the I2S bus signals. So the Regulator on the Mainboard.

Do not change the 3,3Volt on the DAC boards to 5 Volt. the PCM1794 will die

Also no change for the WM8804 regulator (for the blue boards), here is already 5 Volt on the I2S bus by the way.

In doubt, check the ciruits you can download from my site
Sorry, yes. I have the older red mainboard and have changed the 3.3v mainboard reg for a 5v one. The regs on the dac decks remain at 3.3v and 8v
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Old 1st November 2014, 12:15 PM   #3395
davidevinavil is offline davidevinavil  Italy
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Sorry I've quote wrong post
What about this?


Quote:
Originally Posted by dddac View Post
16 bits data or 24 bit data does not matter. wat matters is that you adapt to the dac chip set up. in This case 24 bit, so you know how many clockcycles you need to delay... for the circuit, see my website, it is all there..
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Old 1st November 2014, 08:54 PM   #3396
dddac is offline dddac  Germany
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Quote:
Originally Posted by davidevinavil View Post
Sorry I've quote wrong post
What about this?
This has nothing to do with your earlier question. This is how much you have to delay to make right justified out of I2S protocol. As said, read carefully my website, it is all there.

The dac itself plays anything coming in from the I2S bus...
Do I mis your point? If so, please re phrase your question and could you be more specific, what it is you like to understand? Thx.
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Old 1st November 2014, 09:03 PM   #3397
davidevinavil is offline davidevinavil  Italy
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Thank for replay.. I understand now
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Old 1st November 2014, 11:24 PM   #3398
dwjames is offline dwjames  United Kingdom
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Tonight I finally got my Acko s03 reclocker board working in between the rPi and the DDDAC. Wow.... I thought this sounded good before, but it's just stepped it up another level. This sounds so real and captivating now. I love it!
Here's a couple of pictures, please excuse the mess....
Click the image to open in full size.Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
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Old 1st November 2014, 11:36 PM   #3399
nige2000 is offline nige2000  Ireland
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Bet that's a transformation
no going back I bet
just shows up the imperfections in the Pi i2s
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Old 2nd November 2014, 08:50 AM   #3400
dddac is offline dddac  Germany
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For November (Movember) I go totally Off Topic on my own Website
Please check... (uhmm we should keep this off topic in this thread )
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