DAC-END R (ES9018) full assembled board

[audiodesign]

Hi,
On hifiduino.wordpress.com we can read :
"Had to fix the code in order to make it work. I discovered a couple of things on how the Sabre32 DAC chip behaves:
When switching from SDPIF input to Serial input, it is not sufficient to switch the input format. One must also switch the SPDIF MUX to an input that does not have a live SPDIF signal (I switched it to SPDIF#1 which is shared with the I2S connections). If you do not do this step, the status register will report an SPDIF data stream even though you are receiving an I2S stream, and the sample rate calculation will be completely wrong. However, this has no effect on the sound.
“Auto SPDIF detection” must also be set in the registers when using any of the SPDIF inputs. It is not sufficient to just select the SDPIF input port. If you do not do this step, the DAC will not receive the SPDIF data stream.".

- I am not a specialist but is our Reference DAC concerned with these issues ?

Yes, all my firmware versions consider this, otherwise the spdif does not work on any input frequency.

 

[meintan]

DAC shield:
1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)*
22: danny_66
23: yildiray
24: Boxi80
25: halook*
26: kgkim * 6
27. rredline**
28. la1209
29. kimgiin
30. NicMac
31.vitalica *2 pcs
32. meintan

 

[Halook]

Here is close up of the spdif section of my board

 

[Domi_78]

Hi Halook,
Here is close up of the spdif section of my board.
- On mine, R68 is installed but this part of the circuit does not concern the coaxial input.

 

[glt]

Just for info, I noticed that Hifiduino has a pre-production board (I believe). His board's C36 has a cap and C35 has a resister (?) and Crystek CCHD-950-100 osci.

This is what he claimed:
"I tried several sample rates through the SPDIF interface and also tried up to 352K/384K sample through the I2S interface. Also tried DSD-64 and DSD-128 through the same serial interface (don’t have any DSD higher than 128). Every sample rate and format was supported without a glitch (Some may recall that with the 80Mhz clock, playing 352K and 384K had noise glitches)"

ES9018 “DAC-END R” Fully Assembled DAC | H i F i D U I N O

To be accurate, I am using the Toslink input and only tried 44.1K on the Toslink (connected to CD player). I'll test toslink with higher than 44.1K.

 

[TarnishedEars]

Does anybody reading this thread know what kind of connectors the little white rectangular white 4-pin connectors are which connect the I/V board to the DAC board? I can't seem to get an answer to this question no matter how many times or different ways I attempt to phrase this question.

This really surprises me. Don't any of the rest you plan to experiment with the I/V options? To me that's the entire point of this design. For me, this modularity and flexibility is the entire reason why I purchased this unit. Or am I the only one here who thinks that soldering to the main board over and over again to try various options for experimental purposes is not the best idea?

 

[MisterRogers]

I think a molex type 4 pin will work; measure the spacing/pitch of the pins - that'll help you locate the right connector. Re: plans - seems many are not so much experimenting but making an IV choice and putting together a nice high end DAC for the price. Not sure I'll be experimenting either; I've got my eye on a B1 IV (think NTD1 stripped down).

 

[danny_66]

Hi TarnishedEars,
I went to the local shop and bought the only type they had, it fits perfectly.
So I guess it's pretty standard.

 

[glt]

This is the closest I could find, but not quite the same:
http://media.digikey.com/pdf/Data Sheets/Hirose PDFs/DF1B(Z).pdf
Those connectors are very popular in Asia, but not so popular here in the US. You will have to wait for Quanghao to give the exact part number.

In the past I have purchased extra connector from the manufacturer of the device. Perhaps Quanghao can send them to you with the shield.

I have also used the pin sockets I find inside old computers, VCRs, etc. I just remove them from the housing and use them individually. I put some heat shrink tubing for isolation.

 

[TarnishedEars]

Quanghao,

Can we order some of these little white 4-pin connectors from you? Perhaps you could ship some with the shields?

(Thanks for the ideas guys).

 

[randytsuch]

In a somewhat SPDIF related question, how are you guys generating 192k data?

My macbook only goes to 96k. For the higher data rates, I am using the USB and amanerro.

I thought the touch only goes to 96k?

And to me, USB to SPDIF doesn't make sense, unless you didn't buy the amanerro module.

Randy

 

[caad]

In a somewhat SPDIF related question, how are you guys generating 192k data?

My macbook only goes to 96k. For the higher data rates, I am using the USB and amanerro.

I thought the touch only goes to 96k?

And to me, USB to SPDIF doesn't make sense, unless you didn't buy the amanerro module.

Randy

Hi randy.
The squeezebox touch has a plug in that can make it play 192khz /24bit files
I have tested this via the coax output.
Br
Caad

 

[quanghao]

Hi TarnishedEars!


You want to ask this 4 pin connector?

I will send you 4-wire with shield?

And here's how it's connected, offers you view pictures!

 

[quanghao]

Hi Halook,
Here is close up of the spdif section of my board.
- On mine, R68 is installed but this part of the circuit does not concern the coaxial input.

R68 is not part of the in put.

It's distributed R DAC chip set - ** Although this code worked, but still need to keep this resistor **, I welded it for your self the 2nd post. The first time you send is not it.

You should keep it. If not please help me weld it, or worth 3.3k Ohm 3.3K Ohm (SMD 1206). No need resistors good.
Thank you all!

 

[quanghao]

However I would also like to try the DAC with a tube output stage, as well as a transformer output (among other things). But I need to find some more of those 4-pin connectors to be able to do this without soldering to the main-board.


Thanks again!

if you use the output tube, you should use mode I / out of the DAC, and 4 resistors change IV: R71, 73, 74, 77 - to get the desired gain

 

[quanghao]

Hi Andrea,

- What are the results of your tests on prototype ?

C36 will leave capacitors bypass the limitations of quality capacitors. Because Andrea and I started to use the number of variables, so we can be rid of this capacitor.

You can test the value of C36 from 0.1uF to 10 uF.
thank you!

 

[masterkey]

Hello Quanghao,

Do you have an estimate when you can send the completed DAC?
I completed my payment, please update the list of Group Bay.
Thank you.

 

[quanghao]

Hello Quanghao,

Do you have an estimate when you can send the completed DAC?
I completed my payment, please update the list of Group Bay.
Thank you.

ok, i seen!

thanks

 

[TarnishedEars]

Hi TarnishedEars!


You want to ask this 4 pin connector?

I will send you 4-wire with shield?

And here's how it's connected, offers you view pictures!

Yes, please do send me some of those connectors with the shield. And let me know how much money I will owe you for these. I'd like to order 8 extra connectors so that I can try a bunch of different output topologies on my DAC.

And thank-you for the diagram! That will be very helpful.

 

[quanghao]

Yes, please do send me some of those connectors with the shield. And let me know how much money I will owe you for these. I'd like to order 8 extra connectors so that I can try a bunch of different output topologies on my DAC.

I do not take your money, please consider it my gift. And I just want you to complete DAC!
ok,i sent to you 10 connectors. And I not get your money, only monye for shipping !

All 10$!
thanks!