WEILIANG DAC5 - WM8741 & Tenor TE7022 - Page 12 - diyAudio
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Old 29th August 2012, 11:51 AM   #111
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Join Date: Feb 2009
Default DAC5-V1.9

Hello Mr. Weiliang.
a few months ago from ebay seller I bought your DAC5-V1.9.
DAC output section is changed; I put Lundahl OPT + volume pot + JFET buffer. With my (very tweaked) transport from Marantz CDP-Pro, sound is impressive and I'm very pleased.

I want to do for next few modifications and testing but can not get a schematic of this DAC.
Is it possible to get DAC5-V1.9 schematic from you?
Of course, schematic will be used for internal use only.

Please contact me at.

rajko_m (at) yahoo (dot) com

Thank you very much.
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Old 29th August 2012, 04:00 PM   #112
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Join Date: Aug 2012
Quote:
Originally Posted by RajkoM View Post
Hello Mr. Weiliang.
a few months ago from ebay seller I bought your DAC5-V1.9.
DAC output section is changed; I put Lundahl OPT + volume pot + JFET buffer. With my (very tweaked) transport from Marantz CDP-Pro, sound is impressive and I'm very pleased.

I want to do for next few modifications and testing but can not get a schematic of this DAC.
Is it possible to get DAC5-V1.9 schematic from you?
Of course, schematic will be used for internal use only.

Please contact me at.

rajko_m (at) yahoo (dot) com

Thank you very much.
Hi,
Mailed to your address, thanks.
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Old 29th August 2012, 04:12 PM   #113
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Join Date: Feb 2009
Default DAC5-V1.9

Thank you very much Weiliang.
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Old 10th September 2012, 06:58 AM   #114
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Join Date: Mar 2010
Default DAC7 problems

Hi Guys, I assebled a dac7 this weekend and with lo-Res material it is playing fine.
But with high res (96 or 192) there is a distrortion in the music, something like a shadow sound - that follows the normal sound instead of silence.
It seems that it is jitter but I am not sure.
Any suggestions will be appriciated.

br.
Panos
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Old 10th September 2012, 09:28 PM   #115
bcmbob is offline bcmbob  United States
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Join Date: Dec 2009
Location: Bay City, Michigan
Hallelujah !!!!

The TE7022 USB input sub-card was delivered today and it works perfectly. I'll let it run on the small test bench system for a while and then hook it up to the main one. So far the sound is clean, bright, full and well resolved.

This confirms the problem/s is with the SPDIF path. I can now try to isolate those components and attempt to replace them - maybe. I'm on the list to get the new I2S module offered on another thread on the forum which reportedly will remove the need for anything other than USB.

Thanks all for your support and encouragement. I'll report back after a few days of listening.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
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Old 12th September 2012, 04:48 PM   #116
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Join Date: Apr 2012
Hi everyone,

I bought a DAC5 v1.9 on eba**, and received it today (with a 2months delay).
But no schematic was given to me.
Is it possible to email it to me : myifua (at) gmail dot com

thanks in advance

another question : I want to use it with a quad 405 SMPS kit (with moded input level) and I thought I could use a buffer as preamp.
I wonder why RajkoM use a transfo AND a buffer, don't the use of one of the two would manage the impedance problem?

thank you for your answers
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Old 12th September 2012, 08:47 PM   #117
RajkoM is offline RajkoM  Bosnia and Herzegovina
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Join Date: Feb 2009
.
I wonder why RajkoM use a transfo AND a buffer, don't the use of one of the two would manage the impedance problem?



On volume potentiometer taper output impedance is 2,5-3 Kohm. It must be buffered.
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Old 13th September 2012, 09:33 PM   #118
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Join Date: Apr 2009
Location: Alkmaar
Hello Panosm,

Is the problem solved with the dac7? looks like a great dac to me.
Let me know.

Regards,

Frederick
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Old 16th September 2012, 02:19 AM   #119
atharva is offline atharva  India
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Join Date: Sep 2012
I was planning on building the V1.9 but this thread is not too encouraging. Would it be safe to say that mods are required for v1.9 and there are issues with S/PDIF? For me S/PDIF is critical. Also, there is not much about DAC7.
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Old 16th September 2012, 09:54 AM   #120
Dikosma is offline Dikosma  Russian Federation
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Join Date: Oct 2010
Quote:
Originally Posted by weiliang View Post
Hi Dikosma,
DAC7 lanched on the begining of this August, which is a new products. Combine 2 pcs WM8741 with high quality components, sounds nature and clear. Became a hot seller since listing!
Thank you very much.
But I already bought the DAK for experiments.
To be honest, your afraid to buy because no reviews.
Very interesting, maybe buy a little later.
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