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Old 4th January 2013, 09:23 AM   #61
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Join Date: Sep 2009
Is there the possibility to have a "clean" usb output in order to avoid galvanic isolators or stuff like this when using a usb dac?
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Old 4th January 2013, 12:01 PM   #62
marce is offline marce  United Kingdom
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Join Date: Jun 2007
Location: Blackburn, Lancs
Is it a double sided placement boards?
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Old 8th January 2013, 07:18 AM   #63
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Join Date: Dec 2010
Hi,
This board design for output i2s and spdif only. Seprating DA module may get better analogue. I change the layout to ver1.1 adding one pic-e and pic for testing. It is still testing. If it is good and stable I will sale it for sure, but not too much 1 manufacrtue batch 0.5k pices.

Regards,

Eric

Quote:
Originally Posted by kp93300 View Post
Hi
I am interested to know more about the board.
You can hook up a spdif/ i2s enabled dac to the board to get analogue out to an amp ?
Are there being tested now ?
ARe you offering a group buy or for for sale ?

cheers

kp93300
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Old 8th January 2013, 08:34 AM   #64
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Join Date: Dec 2010
Quote:
Originally Posted by castleeric View Post
Hi,
This board design for output i2s and spdif only. Seprating DA module may get better analogue. I change the layout to ver1.1 adding one pic-e and pic for testing. It is still testing. If it is good and stable I will sale it for sure, but not too much 1 manufacrtue batch 0.5k pices.

Regards,

Eric
Click the image to open in full size.
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Old 8th January 2013, 08:48 AM   #65
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Join Date: Dec 2010
Quote:
Originally Posted by acvtre View Post
Is there the possibility to have a "clean" usb output in order to avoid galvanic isolators or stuff like this when using a usb dac?
Hi,

It is not esay get "clean USB", Cause noise leak by GND awlays, and it is almost impossible for me to isolate power supply and GND of south_bridge from other chip . But I have idependent power supply and GND for IS2 and SPDIF chip on this board.

This board may use USB DAC if OS can drive it.

regards,

Eric
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Old 8th January 2013, 08:54 AM   #66
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Join Date: Dec 2010
Quote:
Originally Posted by marce View Post
Is it a double sided placement boards?
Hi,

Yes, It is double side. I put capacitor, inductor, XO in the other side for EMI issue.

Regards,

Eric
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Old 5th August 2013, 11:41 AM   #67
Crom is offline Crom  United Kingdom
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Join Date: Oct 2012
fascinating project - subscribed!
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Old 5th August 2013, 01:04 PM   #68
JLOP is offline JLOP  France
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Join Date: Sep 2011
Location: Luxembourg
Quote:
Originally Posted by Crom View Post
fascinating project - subscribed!
Indeed ! Did you make some progress Castleric ?
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Old 21st August 2013, 03:08 AM   #69
stacker is offline stacker  United States
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Join Date: Dec 2005
Location: Philadelphia, PA
I want one! How's it going?
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Old 29th September 2013, 07:25 AM   #70
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Join Date: Dec 2009
Am interested in this one. Is the project still on ? What are the specs ? What CPU have you settled on ?

Hope it will have the best specs to support 32bit, 384khz and also DSD.

I suggest you leave out video on the board, or design it so that it can be entirely switched off using jumpers or switches, so that when setting up is done, it can be switched off

PCIe and PCI is good since it allows some flexibility experiment.

Socketed CPU will allow upgrade to higher speeds, if user decide to experiment on room correction etc. See link below for a very highly regarded Room and Speaker correction software
http://www.computeraudiophile.com/co...e-walkthrough/

Last edited by carz; 29th September 2013 at 07:43 AM.
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