DAC Schematic Review and Layout Suggestions - WM8804 and PCM5102A - Page 7 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, 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 27th August 2014, 03:40 AM   #61
diyAudio Member
 
Join Date: Dec 2008
Quote:
Originally Posted by df audio View Post
After I'm done my first board and confirmed that it works, I'll give away the remaining ones (you have to pay shipping though) and post the Gerbers online.
Hi, please let me know if you will have available an extra board, I would be happy to pay also for the board and not just for the shipping keep us updated how it sounds ... I remember an old thread where one had to power the 5102 with 3,6V instead of 3,3 otherwise there were some serious digital clipping issues at max. level
__________________
== There are no limitations to the self except those you believe in ==
  Reply With Quote
Old 27th August 2014, 03:29 PM   #62
diyAudio Member
 
df audio's Avatar
 
Join Date: May 2014
Well, you're welcome to try it out with a 3.6V reg (I believe the LP5907 regulator that I used in this board has a version with this voltage) and see it it sounds better. However, the datasheet states that the maximum voltage for the charge pump is 3.6V, and pushing it close to the limit might damage the chip over time.

Since those Chinese manufacturers are so cheap, I won't mind giving away my first run of boards for free (I ordered 5, but they have the habit of sending over 10+ boards for whatever reason). If there's interest, I'll make a second run with better boards (ENIG, etc.) and Jean-Paul's suggestions. Those you will have to pay for as they're more expensive.

So far you and Jean-Paul are lined up for the first run of boards - I'll post more details once everything's arrived and ready.
  Reply With Quote
Old 28th August 2014, 05:18 AM   #63
diyAudio Member
 
Join Date: Dec 2008
Quote:
Originally Posted by df audio View Post

So far you and Jean-Paul are lined up for the first run of boards - I'll post more details once everything's arrived and ready.
thanks for your kind offer, hope to be able to compensate somehow
__________________
== There are no limitations to the self except those you believe in ==
  Reply With Quote
Old 8th September 2014, 09:28 PM   #64
diyAudio Member
 
df audio's Avatar
 
Join Date: May 2014
Boards are here! I'm itching to start building soon...

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 9th September 2014, 05:17 AM   #65
diyAudio Member
 
Join Date: Dec 2008
wow, really nice and clean looking boards and the manufacture process and shipping from china seems to be blazing fast; I'm curious about your first impressions regarding the sound quality
__________________
== There are no limitations to the self except those you believe in ==
  Reply With Quote
Old 9th September 2014, 10:51 AM   #66
diyAudio Member
 
Join Date: Apr 2003
Location: Tampere Finland Europe
Please consider also the PCM5142A converters. You know, they include DSP, and add just a few pins (I2C/SPI, GPIO outputs for additional I2S outputs). Board like this with the 5142 part would make a nice XOver for a 2-way (or even more with the GPIO I2S usage) speakers.
  Reply With Quote
Old 9th September 2014, 07:14 PM   #67
diyAudio Member
 
df audio's Avatar
 
Join Date: May 2014
Quote:
Originally Posted by luxury54 View Post
wow, really nice and clean looking boards and the manufacture process and shipping from china seems to be blazing fast; I'm curious about your first impressions regarding the sound quality
I'm currently building it and should be able to report on the quality soon.

Quote:
Originally Posted by mhelin View Post
Please consider also the PCM5142A converters. You know, they include DSP, and add just a few pins (I2C/SPI, GPIO outputs for additional I2S outputs). Board like this with the 5142 part would make a nice XOver for a 2-way (or even more with the GPIO I2S usage) speakers.
DSP and programming? Not for me (yet)
  Reply With Quote
Old 10th September 2014, 05:24 AM   #68
diyAudio Member
 
Join Date: Apr 2003
Location: Tampere Finland Europe
Quote:
Originally Posted by df audio View Post
I'm currently building it and should be able to report on the quality soon.



DSP and programming? Not for me (yet)
Actually when using TI Purepath Studio you don't need to know anything about progrmming. It's more like playing with Lego bricks. Visual Dsp.
  Reply With Quote
Old 13th September 2014, 02:48 PM   #69
diyAudio Member
 
df audio's Avatar
 
Join Date: May 2014
I'm still waiting for my backordered diode bridge...

Click the image to open in full size.
  Reply With Quote
Old 14th September 2014, 12:55 AM   #70
diyAudio Member
 
df audio's Avatar
 
Join Date: May 2014
I used a jumper cable over the bridge so that I could try it out. I just couldn't wait...

The DAC doesn't sound as neutral as I expected, but the sound is as a result more smooth and coloured. Distortion in my RMAA test is a bit high, but the details and instrument seperation in music come out fine. Then again, some people prefer their sound to be a bit different than the studio master (think tube amps).

RMAA test (my ALC892 doesn't have enough dynamic range and SNR for an accurate reading, but it does show that my distortion is a bit high), with my onboard output as a comparison

Click the image to open in full size.

I'll post more listening impressions later - right now I'm busy enjoying the music

Click the image to open in full size.
  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
TDA1543 Anarchist DAC PCB layout. Suggestions welcome. freax Digital Line Level 16 24th August 2014 04:47 AM
SPIDF DAC with DIR9001 and PCM5102A - Questions and Suggestions df audio Digital Line Level 4 19th May 2014 12:12 AM
XMOS/PCM5102a DAC vs Modded CD63 - New DAC loses - Why? dwjames Digital Source 4 18th January 2014 07:03 AM
WTB V2.6 PCB for ES9023 / WM8804 S/PDIF DAC –SUBBU DAC grufti Swap Meet 0 26th November 2012 05:51 PM
Schematic review, Coax SPDIF receiver-DAC-Volume pot Neutrality Digital Line Level 19 10th December 2011 06:40 PM


New To Site? Need Help?

All times are GMT. The time now is 10:28 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki