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Old 27th April 2008, 08:19 AM   #1
Dave is offline Dave  New Zealand
diyAudio Member
 
Join Date: Oct 2001
Location: New Zealand
Default DAC PCBs for sale

Diy Audio Folks,

I'm selling PCBs for those who might wish to construct this DAC design.

The design is based around the Burr-Brown (TI) PCM1794 in combination with the SRC4192 and CS8416.

Plenty more details can be found in these links,

Construction Manual-
http://www.geocities.com/d_broadhurst/dac07manual.zip
Schematics-
http://www.geocities.com/d_broadhurst/dac07sch.pdf
PCB Details -
http://www.geocities.com/d_broadhurst/dac07pcb.zip
Bill of materials -
http://www.geocities.com/d_broadhurst/dac07bom.pdf

Pictures
http://www.geocities.com/d_broadhurst/fig1.jpg
http://www.geocities.com/d_broadhurst/fig2.jpg
http://www.geocities.com/d_broadhurst/fig3.jpg

If the links don't work (possibly due to too much traffic) contact me via e-mail (email button at the bottom of this post) and I will send the files to you.

My main impression on sound quality is of a smooth and very musical nature. I have worked on various PCM1704 based designs both using op-amps and also using discrete output stages with no feedback loops. For me the PCM1794 design I present here betters them all.

Please note that this should only be attempted by those who are comfortable soldering surface mount devices. It is actually very easy but this is not the project to use as the learning curve.

The price is 80 US Dollars for main PCB, front panel PCB and programmed microcontroller. All other parts can be purchased from Digi-key and Farnell. Please contact me via the e-mail feature of diyaudio.com.

- David
Attached Images
File Type: jpg fig4.jpg (76.5 KB, 2693 views)
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Old 27th April 2008, 08:58 AM   #2
Dave is offline Dave  New Zealand
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Join Date: Oct 2001
Location: New Zealand
Default Schematics

Schematics
Attached Files
File Type: pdf dac07sch.pdf (82.6 KB, 586 views)
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DIY DAC, 24/192 inputs, fully balanced
http://www.diyaudio.com/forums/showt...hreadid=122078
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Old 28th April 2008, 09:23 PM   #3
Dave is offline Dave  New Zealand
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Join Date: Oct 2001
Location: New Zealand
Default Another Image

Another photo of the board.
Attached Images
File Type: jpg fig5.jpg (96.2 KB, 2408 views)
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DIY DAC, 24/192 inputs, fully balanced
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Old 8th December 2008, 06:08 PM   #4
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Join Date: May 2007
Please send schematics and assembly manual etc. also how many have you sold for feedback and what is the parts cost?
regards
colinbarron@hotmail.com
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Old 31st March 2009, 01:29 AM   #5
Dave is offline Dave  New Zealand
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Join Date: Oct 2001
Location: New Zealand
I finally have my own DAC in its case.
The case is from http://www.modushop.biz/

Drop me an e-mail for some decent quality images / schematics etc.
Attached Images
File Type: jpg dbdac07_1.jpg (63.3 KB, 1160 views)
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Old 31st March 2009, 01:30 AM   #6
Dave is offline Dave  New Zealand
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Join Date: Oct 2001
Location: New Zealand
Back View
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File Type: jpg dbdac07_2.jpg (74.3 KB, 1116 views)
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DIY DAC, 24/192 inputs, fully balanced
http://www.diyaudio.com/forums/showt...hreadid=122078
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Old 31st March 2009, 01:31 AM   #7
Dave is offline Dave  New Zealand
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Join Date: Oct 2001
Location: New Zealand
Drilling the front panel. The PCB has holes in the centre of the LEDs / buttons. You can do this without damaging the board.
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File Type: jpg p1010139.jpg (89.1 KB, 1113 views)
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Old 25th April 2012, 03:14 AM   #8
bernhix is offline bernhix  Philippines
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how this DAC perform for this time? Can you share the schematics or the documents? My email add is bernhix@gmail.com
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