ES9023 DAC PCB - Page 9

samoloko · 29th May 2012, 08:50 AM

qusp

what do you think about Panasonic Metalized Polypropilene ECWF ECWF2224JAQ - PANASONIC - CAPACITOR, 250V, 220NF, 5% | Farnell ????????
and Arcotroniks Polypropylene film caps

jean-paul · 08:41 PM

Sorry but we kept things as they were which is already of a pretty high level. No changes anymore as PCBs will be produced. Decoupling has been changed somewhat and beads were added since we were at it and still had the possibility. So those of you that want to use other through hole caps will have to do the hard task of soldering them straight on the RCA connectors

But I leave further communication to Unixdeveloper as he is the guy providing this Group Buy. Be glad we did this, there are no other SPDIF versions around for DIY. As far as I am involved no PSU PCB will be made as the DAC is happy with a decent "audio-standard" 5V power supply. The 4 onboard regs do a good job. The complete DAC draws 50 to 70 mA depending on which oscillator is used. BTW the Fox oscillator types are drawing the most current. The Euroquartz are fine too and draw 20 mA less current which is quite a difference. I haven't tried Crystek clocks (yet).

Since I only had switchers at hand I bought a cheap Velleman K1823 power supply which I used with 1800/35 Pana FC, 2 x 10 uF BG STD, 10DQ11 diodes and ferrite coils to filter out any possible RF. It sounds better than any of the available switchers I tried and because of this I did not explore other linear power supplies. I am waiting for the first "shunt supply" post...

jean-paul · 09:21 PM

That should be 11DQ10 diodes... BTW this is the supply I used. There seem to exist 2 versions of them. I don't like the mounting holes that are very close to parts and tracks but with the right mounting hardware it won't be a problem. I have also used an audiophile regulator configured for 5V that can be found here:

http://circulator.bravehost.com/Gminireg.htm

Since I never got the chance to AB compare I can not give any comment. Focus was on the DAC itself as you can imagine. It is just to give you an idea which power supply you can use. A 5V 250 mA to 1 A power supply really is enough but a beefier power supply won't hurt. The choice is yours. I never used AC adapters or wall warts as I dislike them (got this question by mail).

Please keep in mind to first adjust (adjustable) regulators to 5V before you connect them to the DAC...certainly when you decide on ADP151 regs !!!

http://en.wikipedia.org/wiki/AC_adapter

necplusultra · 15th July 2012, 12:00 PM

Greetings,

got my mouser order but not the boards yet.

can somebody post pictures or connection diagram for balanced mode with 2 boards?

thanks.

unixdeveloper · 16th July 2012, 07:30 AM

Quote:

Originally Posted by necplusultra

Greetings,

got my mouser order but not the boards yet.

can somebody post pictures or connection diagram for balanced mode with 2 boards?

thanks.

The connection instructions are in the build guide which I mailed earlier. Let me know if you haven't received it. Regarding the boards they were either mailed on 5th or 9th of July. Did you receive an email with the shipment notification?

Thanks!
Subbu

necplusultra · 16th July 2012, 12:31 PM

thanks Subbu

yes, got confimation and read the guide. Its not clear to me, I presume for balanced mode, the pos from one board is the + for left and right and the neg from other board is for corresponding left and right -.

necplusultra · 18th July 2012, 03:45 PM

I completed one board but the U3 is outputting only 2.3V.
all other regs are outputting about 3.3V
I'm using salas bib at 5v to power up the unit.

not getting any sound from my spdif output to dac board.

any type of help is welcome.

ps: using older bom with 220k r11. I wonder if that is the problem

syklab · 18th July 2012, 04:29 PM

Just finished my first one and it has been singing all night, I compare it with my oppo 83SE NuForce and W4S DAC2 and I like this dac better already. I will let it run in for another day or two. I am runing it from a cheap simple 317 reg only and in the mean time I will start on my super reg for this weekend.

Thank you Subbu and JP for this excellent DAC !

jean-paul · 05:18 PM

Wait a minute, did you just say it sounds better than a oppo 83SE NuForce and a W4S DAC2 ?!? You made my day syklab ! I know it is very good but it is better not to exaggerate the quality of self made designs

Did you listen to 16 bit 44.1 kHz or high res material ?

What 4.7 nF caps did you use ? And what is the brand/type of the 317 supply ? It seems a good alternative for the people that are waiting for our power supply PCB.

Thanks for the comments and I am glad you're satisfied.

jean-paul · 05:05 PM

Quote:

Originally Posted by necplusultra

I completed one board but the U3 is outputting only 2.3V.
all other regs are outputting about 3.3V
I'm using salas bib at 5v to power up the unit.

not getting any sound from my spdif output to dac board.

any type of help is welcome.

ps: using older bom with 220k r11. I wonder if that is the problem

Not R11. Is either the ES9023 or the reg becoming hot ? Did you solder the ES9023 the wrong way around ? Are there small shorts between pins ? Check with a magnifying lamp.

No shorts ? Resolder the ES9023 and maybe replace the reg if it still does not function.

29th May 2012, 08:14 PM	#82
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: Germany	Sorry but we kept things as they were which is already of a pretty high level. No changes anymore as PCBs will be produced. Decoupling has been changed somewhat and beads were added since we were at it and still had the possibility. So those of you that want to use other through hole caps will have to do the hard task of soldering them straight on the RCA connectors But I leave further communication to Unixdeveloper as he is the guy providing this Group Buy. Be glad we did this, there are no other SPDIF versions around for DIY. As far as I am involved no PSU PCB will be made as the DAC is happy with a decent "audio-standard" 5V power supply. The 4 onboard regs do a good job. The complete DAC draws 50 to 70 mA depending on which oscillator is used. BTW the Fox oscillator types are drawing the most current. The Euroquartz are fine too and draw 20 mA less current which is quite a difference. I haven't tried Crystek clocks (yet). Since I only had switchers at hand I bought a cheap Velleman K1823 power supply which I used with 1800/35 Pana FC, 2 x 10 uF BG STD, 10DQ11 diodes and ferrite coils to filter out any possible RF. It sounds better than any of the available switchers I tried and because of this I did not explore other linear power supplies. I am waiting for the first "shunt supply" post... __________________ It's only audio Last edited by jean-paul; 29th May 2012 at 08:41 PM.

18th July 2012, 04:52 PM	#89
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: Germany	Wait a minute, did you just say it sounds better than a oppo 83SE NuForce and a W4S DAC2 ?!? You made my day syklab ! I know it is very good but it is better not to exaggerate the quality of self made designs Did you listen to 16 bit 44.1 kHz or high res material ? What 4.7 nF caps did you use ? And what is the brand/type of the 317 supply ? It seems a good alternative for the people that are waiting for our power supply PCB. Thanks for the comments and I am glad you're satisfied. __________________ It's only audio Last edited by jean-paul; 18th July 2012 at 05:18 PM.

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29th May 2012, 08:50 AM	#81
samoloko diyAudio Member Join Date: Jun 2006	qusp what do you think about Panasonic Metalized Polypropilene ECWF ECWF2224JAQ - PANASONIC - CAPACITOR, 250V, 220NF, 5% \| Farnell ???????? and Arcotroniks Polypropylene film caps

15th July 2012, 12:00 PM	#84
necplusultra diyAudio Member Join Date: Jan 2011 Location: sitting down	Greetings, got my mouser order but not the boards yet. can somebody post pictures or connection diagram for balanced mode with 2 boards? thanks.

16th July 2012, 12:31 PM	#86
necplusultra diyAudio Member Join Date: Jan 2011 Location: sitting down	thanks Subbu yes, got confimation and read the guide. Its not clear to me, I presume for balanced mode, the pos from one board is the + for left and right and the neg from other board is for corresponding left and right -.

18th July 2012, 03:45 PM	#87
necplusultra diyAudio Member Join Date: Jan 2011 Location: sitting down	I completed one board but the U3 is outputting only 2.3V. all other regs are outputting about 3.3V I'm using salas bib at 5v to power up the unit. not getting any sound from my spdif output to dac board. any type of help is welcome. ps: using older bom with 220k r11. I wonder if that is the problem

18th July 2012, 04:29 PM	#88
syklab diyAudio Member Join Date: Jul 2009 Location: Hong Kong	Just finished my first one and it has been singing all night, I compare it with my oppo 83SE NuForce and W4S DAC2 and I like this dac better already. I will let it run in for another day or two. I am runing it from a cheap simple 317 reg only and in the mean time I will start on my super reg for this weekend. Thank you Subbu and JP for this excellent DAC !