DAC-END R (ES9018) full assembled board

[kmajjo]

... or refer to QuangHao's official diagrams -
http://www.diyaudio.com/forums/attachments/quanghao-audio-design/333573d1362236003-dac-end-r-es9018-full-assembled-board-hole-behind.jpg
http://www.diyaudio.com/forums/attachments/quanghao-audio-design/333313d1362120339-dac-end-r-es9018-full-assembled-board-dimension-dac-layout.jpg

Hello ,
Sorry , but it's not the last drawing (not my pcb).
Br
jacky

 

[brgds]

kmajjo,
linuxfan,

many thanks for your help.
My locksmith will be happy 🙂

regards,

 

[brgds]

problem DC-offset

Hi there,
finally the case arrived 🙂
The problem is I can't set the DC offset smaller than ca 150 mV
J+ J- removed, mute ON
Any idea?

 

[brgds]

Got it! The supply voltage was too high - 21V AC. Decreased by unwounding the transformers secondary, and now no problem to get as low as a few mV, below 1mV with jumpers in.

 

[linuxfan]

Hello Quanghao,
Now that part 1 of the ES9038 PRO group buy is complete, I hope you can investigate and fix my version-1 DAC-END-R, sent by me last December.
Please let me know if you need me to pay postage back to Australia.

 

[quanghao]

Hello Quanghao,
Now that part 1 of the ES9038 PRO group buy is complete, I hope you can investigate and fix my version-1 DAC-END-R, sent by me last December.
Please let me know if you need me to pay postage back to Australia.

hi!

i check all, but what wrong in your DAC ??

i see all work well!

thank your advice !

quanghao

 

[linuxfan]

I had no audio output, and strange LED display - "PCM-/0)-Hz"
see post #2291
http://www.diyaudio.com/forums/quanghao-audio-design/228755-dac-end-r-es9018-full-assembled-board-230.html#post4909486

Did you test my DAC board with my controller board? Or did you use your own controller board?

As input source I tried:
- coax from CD player
- optical from TV
Both of these sources work OK when I connect them directly to my I.AM.D V200 digital amplifier.

 

[quanghao]

You made a mistake.

This cable is the cause. Please remove it

Please take a look at this video

thank, and sent to me 50$ for shipping back!

thank again

 

[linuxfan]

OK thanks for investigating. US$50 sent now.

I was hoping to use that U.FL cable for synchronous clocking from my Beaglebone Black Cronus interface - the cable would connect to the 45/49 clock output from the Cronus, and I would disable the DAC's onboard clock by removing its power supply header.
Is this not possible?

 

[linuxfan]

Hello Quanghao,
It's been a month, can I please check that the DAC board has been posted? Maybe a tracking number?
After all this time, it would be tragic to lose the DAC board in the mail.

 

[danny_66]

Hello Quanghao,
I have a DAC-END v1,
can I upgrade the the es9018 to an es9028pro like Dimdim did overhere ?

I see two possible problems:
1. the remote commands are maybe not compatible with the es9028pro ?
2. the power supply can't deliver enough current for the es9028pro ?
power consumption 1.2V (VDD) es9018: 37mA es9028pro: 82mA

Regards,
Danny

 

[quanghao]

[QUOTE=danny_66;

hi!


ES9028 and 9038pro you can not change for ES9018S PCB.

may be ES9028 can use in ES9018S, but not the best for use.

9028pro have some other es9018s. the better need use other PCB.

9038Pro can not use in pcb es9018s, becuase 9038pro need current = 3 x ES9018S.

Not: all schema ES9018 not the sample ES9028-38

thank
quanghao