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Old 31st May 2013, 12:25 PM   #661
jcga is offline jcga  France
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Hi,
added myself on the group buy

Best from France
Jean Claude
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Old 31st May 2013, 01:37 PM   #662
billyk is offline billyk  United States
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Quote:
Originally Posted by jcga View Post
Hi,
added myself on the group buy

Best from France
Jean Claude
Good Morning,
This GB has been closed for some time. Hopefully you mean this ES9023 / WM8804 S/PDIF "Subbu DAC V3" GB Interest
Billy
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Old 9th June 2013, 10:58 PM   #663
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Hi!

Is this group buy is closed? The first post says "Subbu's DAC V3 GB is still opened & Alive" but it is edited 25 of may.

BR Christian
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Old 10th June 2013, 12:38 PM   #664
atupi is offline atupi  Romania
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Still open ! Put your name on the spreadsheet and wait for the magic moment when you will be asked to pay .
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Rega RP-1/Simplistic RIAA by Salas/ DCB1 clone/ MyRef Fremen Edition/FC-100/ XTZ 99.26 MkII speakers
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Old 10th June 2013, 01:59 PM   #665
atupi is offline atupi  Romania
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Sorry for previus message. This is the right thread where the Gb is still open.
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Old 13th June 2013, 11:30 PM   #666
kopczas is offline kopczas  Poland
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Hello.

I found this project for the first time. It looks interesting but I have few questions about pcb and schematic which i wasn`t able to find:

how much improvement gives separate power supply for each section : 2 for WM8804 and other for ES.

does the PCB for this project has separated ground plane for DGND and AGND?
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Old 19th June 2013, 03:44 PM   #667
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Hi kopczas

Schematics are provided to GB buyer's, SPDIF PCB is now published.

Have a look there for the SPDIF version : "Subbu DAC V3 - ES9023/WM8804 SPDIF & Power Supply PCB" Group Buy

I hope the I2S version to be available soon.

There are 5 LDO used (3.3 & 3.6v) MIC5205 for each section of the DAC.
Difficult to say how much improvment they give, and compare to what ?
I can say this DAC sounds pretty good, such as V2.6 does
About separate ground plane (D & A) I prefer designers to give you the answer.

Regards

Phil
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Old 19th June 2013, 04:19 PM   #668
kopczas is offline kopczas  Poland
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Hello korben,
is was thinking about externa,l complitly independent discrete power sources (with separate rectifiers) like super teddy reg etc.
Ok, I will ask somewhere else about separate groud planes(it`s one of the most important things; for me it`s obvious D & A ground should stand alone).

Thank you for your answer.
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Old 19th June 2013, 04:44 PM   #669
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kopczas
Have a look at the PSU module that fed the DAC and BTW the 5 onboard MIC5205.
Jean-Paul has designed this device to act as a pre-reg, using LM723 (low noise chip).

Regards

Phil
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Old 24th June 2013, 10:12 PM   #670
kopczas is offline kopczas  Poland
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Has any measurements of this power supply been done?
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