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Wolfson WM8740 DIR9001 PCM2706 DIY DAC
Wolfson WM8740 DIR9001 PCM2706 DIY DAC
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Old 8th September 2011, 12:09 AM   #71
noSmoking is offline noSmoking  United States
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Wolfson WM8740 DIR9001 PCM2706 DIY DAC
btw the square plug that is empty is for a headphone amp out L,R G 12+
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Old 8th September 2011, 08:43 PM   #72
cobretti is offline cobretti  United States
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Probably, yes. It should be the same as RCA outputs, my guess.

Last edited by cobretti; 8th September 2011 at 08:45 PM.
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Old 9th September 2011, 09:58 PM   #73
noSmoking is offline noSmoking  United States
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Wolfson WM8740 DIR9001 PCM2706 DIY DAC
hi,
This board sounds great I am working to getting a box for it to live in it's been playing for 3 days now so we will see how it sounds in a week or so ,
btw I did put some small mostly vertical heatsinks on the 7808's and it did cool them a bit.still listening to diff opamps.....
Happy Listening!!!!!!!!!
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Old 13th September 2011, 10:18 AM   #74
dtses is offline dtses
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here are few pics of mine

finished inside but still have some work on the case.

Also considering to add optical input (need it to connect LG LED). Found several options:

-just add this inside the case
-use separate device
-or build my own and connect it to Coax input. It looks very easy
Attached Images
File Type: jpg P9131635.jpg (465.0 KB, 977 views)
File Type: jpg P9131637.jpg (481.1 KB, 911 views)
File Type: jpg P9131639.jpg (371.6 KB, 853 views)
File Type: jpg P9131640.jpg (369.2 KB, 818 views)
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Old 13th September 2011, 03:35 PM   #75
noSmoking is offline noSmoking  United States
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Wolfson WM8740 DIR9001 PCM2706 DIY DAC
that's a nice rig you got going tell me what is the silver wire I can tell they run ac but what kind are they!
I will make a picture of the heatsinks I put on 7808 they are not real pretty but you can hardly feel the warm on them now I actually consider cutting them in half and let then get a little warmer,lol.
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Old 28th September 2011, 11:08 AM   #76
jnewbold is offline jnewbold  Australia
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I don't need the USB input on a DAC. Can I simply leave off all the all parts associated with PCM2706 etc? Seems pointless to populate the board with stuff I don't need.

Joe.
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Old 28th September 2011, 03:40 PM   #77
noSmoking is offline noSmoking  United States
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Wolfson WM8740 DIR9001 PCM2706 DIY DAC
Hi jnewbold,
Yes omit those parts and it will work fine I have one running like that .
Cya!
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Old 1st October 2011, 03:00 AM   #78
cobretti is offline cobretti  United States
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Quote:
Originally Posted by dtses View Post
here are few pics of mine

finished inside but still have some work on the case.

Also considering to add optical input (need it to connect LG LED). Found several options:

-just add this inside the case
-use separate device
-or build my own and connect it to Coax input. It looks very easy
Looks nice, I just don't understand why you running silver power wires loop all around the enclosure and back. I think you would do better if you go straight to fuses.
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Old 1st October 2011, 10:45 AM   #79
dtses is offline dtses
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Quote:
Originally Posted by cobretti View Post
Looks nice, I just don't understand why you running silver power wires loop all around the enclosure and back. I think you would do better if you go straight to fuses.
well, frankly speaking that seems to me the only way to put ferrite filter inside the box Anyway, I think half of a meter of this silver mains doesn't influence on anything.

here are few more pics
Attached Images
File Type: jpg PA011669.jpg (321.6 KB, 685 views)
File Type: jpg PA011673.jpg (329.5 KB, 225 views)
File Type: jpg PA011672.jpg (338.8 KB, 191 views)
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Old 6th October 2011, 12:27 PM   #80
bartmalow is offline bartmalow  Ireland
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Hi,
Anyone can advise me on transformer to be used for this dac. I have some old toroidal transformer. I presume it's about 40-50AV with secondary output voltage 2 x 15v and 2x 10v.
Do you think it would be suitable? I have also chassis mounting transformer 2x9v, 12VA. I was planning to buy 30AV 2x15v for the analogue circuit.

Cheers,
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