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ES9023 / WM8804 S/PDIF DAC Group Buy
ES9023 / WM8804 S/PDIF DAC Group Buy
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Old 8th June 2012, 11:08 AM   #131
Dufus is offline Dufus
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Quote:
Originally Posted by rvrazvan View Post
Anybody interested in a case grop buy?
Case for the Dac of course. I will be making about 10 for me.
What are you having in mind? Size/price
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Old 8th June 2012, 12:16 PM   #132
jean-paul is offline jean-paul  Netherlands
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Good initiative rvrazvan ! However I feel it is better to start a new separate thread on this for instance with the title: "Case for group buy ES9023 DAC" or something like that. Just to keep things concentrated.

What material will be used ?
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Old 8th June 2012, 12:18 PM   #133
rvrazvan is offline rvrazvan  Romania
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Well...i would like something like this
Click the image to open in full size.
Or this(not a dac, but i like it)
Click the image to open in full size.

I will use some wood/venner for aestethics. Aluminium or 2mm steel for the rest, powder coated. It will be alot cheaper if i stick to 2mm sheet metal.

I want the price to stay below 50$.
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Old 8th June 2012, 12:45 PM   #134
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I was thinking of making small case from solid bullet aluminum just to fit the board but cost is too high.

Last edited by Dufus; 8th June 2012 at 12:59 PM. Reason: typo
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Old 12th June 2012, 04:03 PM   #135
findingmyway4ever is offline findingmyway4ever  United States
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I have one of the units completed for sale. It was built by JP himself. It sounds exceptional and is the equal or better of anything I have in house, cost no option. Please pm me if you would like details/photos of it.

Thank You!
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Old 12th June 2012, 06:15 PM   #136
Ryssen is offline Ryssen  Sweden
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Quote:
Originally Posted by jean-paul View Post
Come on, LM723 only needs 6 external components and the DAC only consumes 50 mA to 70 mA (when you decide on a 50 MHz Fox oscillator) so no pass transistor. Maybe just maybe when you ask Subbu in a polite manner then maybe just maybe we can make a nice LM723 based power supply PCB. Don't tell him I gave you the idea, OK ? I kind of like the "new meets old" feeling of the WM8804-ES9023-LM723 combination. No rational explanation except for the very low noise of LM723 (2.5 uV !!!).

LM1084 is more noisy than 7805.....it is a 5A reg which seems overkill too.
How to calculate Rsc?
And What is minimal input voltage with 5v out?
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Last edited by Ryssen; 12th June 2012 at 06:19 PM.
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Old 12th June 2012, 07:36 PM   #137
VT67 is online now VT67  Belgium
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Quote:
Originally Posted by findingmyway4ever View Post
I have one of the units completed for sale. It was built by JP himself. It sounds exceptional and is the equal or better of anything I have in house, cost no option. Please pm me if you would like details/photos of it.

Thank You!
Why not post some pictures here?

Regards
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Old 12th June 2012, 07:43 PM   #138
jean-paul is offline jean-paul  Netherlands
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Quote:
Originally Posted by Ryssen View Post
How to calculate Rsc?
And What is minimal input voltage with 5v out?
Hi Åke, we are still looking for other (discrete) solutions as LM723 needs at least 9.5 V input voltage. We are also willing to know how many of the group buy participants would like to have a power supply PCB too. For calculating Rsc please see data sheet of LM723.
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Last edited by jean-paul; 12th June 2012 at 07:47 PM.
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Old 12th June 2012, 07:54 PM   #139
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JP i would like to buy PS pcb when available.
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Old 12th June 2012, 08:02 PM   #140
VT67 is online now VT67  Belgium
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I'm game if it's a good one
Will it be one with the transformer on the PCB?

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