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Old 9th October 2012, 02:47 PM   #131
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Join Date: Sep 2012
Hi to all,
My first post btw, I bought V1.9 DAC and would like to add volume control.
Can it be done with just adding the resistors at the output (like serial plus shunt)? Why is the buffer needed and can we live without it? I plan to go directly to the power amp with 1V sensitivity, I measured the dac output and it's above 2V for 0db source.
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Old 11th October 2012, 07:07 AM   #132
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Join Date: Jan 2012
Weiliang,

I just ordered a DAC7. Do you have a schematic I could have? Also, I couldn't find a description for the dip switches or the switch on the back.

Thanks.
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Old 13th October 2012, 02:43 PM   #133
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Join Date: Aug 2012
Quote:
Originally Posted by atharva View Post
Hello Weiliang,

I have purchased the V1.9 Dac 5 as well. Can you email me the schematic?

rwankar@gmail.com

Regards,
- Ravi
Hello, sent it to your email already!
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Old 13th October 2012, 02:45 PM   #134
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Join Date: Aug 2012
Quote:
Originally Posted by batalok View Post
Dear Weiliang

I forget, my email is k dot tan at tiscali dot nl.
Regards
batalok
Hello, sent it to you already
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Old 13th October 2012, 02:46 PM   #135
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Join Date: Aug 2012
Quote:
Originally Posted by maynard999 View Post
Weiliang,

I just ordered a DAC7. Do you have a schematic I could have? Also, I couldn't find a description for the dip switches or the switch on the back.

Thanks.
Hi, pm me please, tks
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Old 13th October 2012, 04:12 PM   #136
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Join Date: Apr 2012
Hi, weiliang!
I've just built DAC5 V1.9, but there's no sound at all...
The LED's light up, USB connection works... but silence.
Could you please provide the schematics and some suggestions how to investigate the trouble?
Thanks!
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Old 15th October 2012, 09:46 PM   #137
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Join Date: Sep 2012
Quote:
Originally Posted by kristijanpop View Post
Hi to all,
My first post btw, I bought V1.9 DAC and would like to add volume control.
Can it be done with just adding the resistors at the output (like serial plus shunt)? Why is the buffer needed and can we live without it? I plan to go directly to the power amp with 1V sensitivity, I measured the dac output and it's above 2V for 0db source.
Anyone ?
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Old 16th October 2012, 02:09 PM   #138
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Join Date: Jul 2012
Location: Timisoara
Hello Weiliang,

I have received my DAC 7 v1.1 yesterday. Can you email me the schematic (only for my personal use)?
a.coroama (at) gmail com

Thank You!
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Old 22nd October 2012, 11:03 PM   #139
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Join Date: Apr 2012
Quote:
Originally Posted by yvlasenko View Post
Hi, weiliang!
The LED's light up, USB connection works... but silence.
After a while, I've found the problem, it was a weak soldering of D74HC157. After I've re-soldered it, everything's ok
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Old 23rd October 2012, 10:10 PM   #140
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Join Date: Oct 2012
Hi guys!

I'm looking into building a pre-amp using a Raspberry PI over USB and a toslink/spdif panel. As a DAC the stuff weiliang designs looks very promising.

I've read that the switch toggles between coax and optical but I can't find out how the board switches between USB and spdif input. Is this just a matter of not sending a signal or is there something else involved. And if so, how does the board behave when both channels receive a signal?

Thanks!
Ernst
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