WEILIANG DAC5 - WM8741 & Tenor TE7022 - Page 23 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th March 2013, 04:51 AM   #221
Riki610 is offline Riki610  Slovakia
diyAudio Member
 
Join Date: Mar 2013
Location: Dunajska Streda
Default DAC7 Weiliang

DAC7 Weiliang - "" "" HELP "" "" I have the following problem, when switching between toslink and spdif hear popping, further when listening to music via toslink hear popping at random intervals. Does anyone have an idea what can be the problem?
Further I have a question about the purpose of double toggle switch with two LEDs?
Further pcb is fitted with IO opa2604 and 0.3ppm TCXO 12.000000MHz (Golden), but the sound quality I'm not excited. When buying this product, I do not receive no instructions for use. I've just found that trimming is used to adjust the voltage to 12V Opa. Another option settings on the board or not is besides the two switches.
  Reply With Quote
Old 17th March 2013, 08:06 PM   #222
phase is offline phase  United States
diyAudio Member
 
Join Date: Oct 2004
I know that mine needed to burn in some before producing meaningful bass, and clear highs.

My question for those who know more about electronics than I do is:

Which opamp is for the buffer, and which is the gain?

Was considering placing different opamps in place of the opa2604's, and was curious as to specific placement. Mine is version 1.9(DAC5).
  Reply With Quote
Old 19th March 2013, 07:33 AM   #223
diyAudio Member
 
Join Date: Aug 2010
I recently purchased the CM6631 module which fits into the DAC7. Unfortunately the supplied drivers do not work with my Win 7 laptop. Any ideas on getting it to work. The LED on the CM6631 board lights up. The LED on the main board also lights up indicating USB when I plug the USB cable into the computer.
The driver installer just shows a message - Please plug in the CMAUDIO USB 2.0 device..
  Reply With Quote
Old 19th March 2013, 12:55 PM   #224
diyAudio Member
 
Join Date: Dec 2011
Location: Hong Kong
after failing & smoked 3 sets DAC5 kit, finally i gave up and ordered a pre-built board, together with the 1ppm crystal, opamps (47920HA), upgraded voltage regulators and a CM6631a usb interface. (make sure nothing goes wrong this time.)

works flawlessly with usb & coaxial. the sound is good & clear.

may someone teach me what is the name of those rectifier diode in red circle? are they good?
Attached Images
File Type: jpg nEO_IMG_P1090806.jpg (173.0 KB, 471 views)
File Type: jpg nEO_IMG_P1090808.jpg (72.8 KB, 434 views)

Last edited by kentdream; 19th March 2013 at 12:58 PM.
  Reply With Quote
Old 19th March 2013, 01:59 PM   #225
diyAudio Member
 
Join Date: Apr 2012
Hi weiliang, just a bit of advice, you should try ess sabre tech dacs. They are really popular these days. Or xmos chip usb to spdif.
  Reply With Quote
Old 20th March 2013, 01:21 AM   #226
diyAudio Member
 
Join Date: Dec 2012
Quote:
Originally Posted by vinodt1347 View Post
I recently purchased the CM6631 module which fits into the DAC7. Unfortunately the supplied drivers do not work with my Win 7 laptop. Any ideas on getting it to work. The LED on the CM6631 board lights up. The LED on the main board also lights up indicating USB when I plug the USB cable into the computer.
The driver installer just shows a message - Please plug in the CMAUDIO USB 2.0 device..
Hi, same here, but I managed to install the driver anyway. This is what I did to get the USB working.

1) PC running (yes Win 7), I opened the "system" dialog box, if the DAC7 is plug in I can see from the device list.

2) turn on the DAC7

3) plug in the USB cable.

4) Pray. It works..most of the time.. if it don't, I unplug the cable and change to another USB port.

This is the first time I pipe my audio from my CD player/PC through a DAC and it proves that dedicated D/A device does play a major role in improving sound quality. (Of course there are good CD players out there can can do it).

The USB inconsistency problem and the limited ability to detect SPDIF condition (from my CD Player) and mute itself, prompted me to get D/A units from well known manufacturers rather than a kit.

Nevertheless, I enjoyed the process of DIYing the DAC7 and I learnt a lot from it during the process.
  Reply With Quote
Old 20th March 2013, 02:04 AM   #227
phase is offline phase  United States
diyAudio Member
 
Join Date: Oct 2004
I feel for you having attempted to assemble your own, that sucks. I was too afraid to try that myself.

I am waiting on a set of opa627 to come to me from far away. Might replace the caps in the dac and my E5 headphone amp next, but that will carry a bit more risk, of me trashing the board...
  Reply With Quote
Old 23rd March 2013, 01:41 AM   #228
phase is offline phase  United States
diyAudio Member
 
Join Date: Oct 2004
Well after I actually looked at the capacitors on my dac5, I don't think I'll be replacing any of them any time soon, they are decent quality as indicated.
Just awaiting the opa627 combo...
It has been sounding better and better, but nearing the 100 hour mark, I think it has finally settled.
  Reply With Quote
Old 23rd March 2013, 12:33 PM   #229
diyAudio Member
 
Join Date: Aug 2012
Hello guys
NEW launch AK4399 DAC9 The AK4113 is being designed...
  Reply With Quote
Old 23rd March 2013, 12:37 PM   #230
diyAudio Member
 
Join Date: Aug 2012
Quote:
Originally Posted by Riki610 View Post
DAC7 Weiliang - "" "" HELP "" "" I have the following problem, when switching between toslink and spdif hear popping, further when listening to music via toslink hear popping at random intervals. Does anyone have an idea what can be the problem?
Further I have a question about the purpose of double toggle switch with two LEDs?
Further pcb is fitted with IO opa2604 and 0.3ppm TCXO 12.000000MHz (Golden), but the sound quality I'm not excited. When buying this product, I do not receive no instructions for use. I've just found that trimming is used to adjust the voltage to 12V Opa. Another option settings on the board or not is besides the two switches.
Hello friend
Need short-circuiting the SEL point on the back PCB.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Info on Tenor TE7022? chaparK Digital Source 22 19th December 2013 11:02 AM
Mission DAC5 (DAC7 chipset) ash_dac Digital Source 7 24th September 2009 01:03 PM
Gran Tenor juliovideo Tubes / Valves 14 16th July 2009 09:19 PM
so who owns a dac5 or m8 phono amp builder jb Tubes / Valves 0 21st July 2005 08:47 PM
Dac5 Norbert Digital Source 2 9th June 2003 09:26 AM


New To Site? Need Help?

All times are GMT. The time now is 12:17 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2