DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532 - Page 260 - 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 29th September 2013, 07:42 PM   #2591
jdamico is offline jdamico  Venezuela
diyAudio Member
 
jdamico's Avatar
 
Join Date: Sep 2009
Location: South America
Default Other pics

In this second post will share some other pics. Maybe later will be able to give more details (after burn in).
Thanks to all the diyers that shared they experiences, were very useful.
Attached Images
File Type: jpg Foto4.jpg (1,000.9 KB, 795 views)
File Type: jpg Foto5.jpg (1,013.1 KB, 733 views)
File Type: jpg Foto6.jpg (1,022.7 KB, 707 views)
  Reply With Quote
Old 2nd October 2013, 05:28 PM   #2592
ferynov is offline ferynov  Indonesia
diyAudio Member
 
ferynov's Avatar
 
Join Date: May 2008
Location: Borneo
Blog Entries: 3
Send a message via Yahoo to ferynov
@jdamico : nice build

my dac in little case...
Attached Images
File Type: jpg dac-akm4396-a.jpg (151.6 KB, 658 views)
File Type: jpg dac-akm4396-c.jpg (107.9 KB, 648 views)
__________________
-Best Regards-
diy blog

Last edited by ferynov; 2nd October 2013 at 05:32 PM.
  Reply With Quote
Old 3rd October 2013, 01:27 AM   #2593
tofurky is offline tofurky  United States
diyAudio Member
 
Join Date: Jan 2013
Default i2s ideas and questions

hey,
i'm considering modding this to use direct i2s input instead of spdif. i have a couple ideas (and a bunch of questions) as to how this could best be accomplished.
  1. remove the 4x 51ohm resistors that send i2s from the cs8416 to the ak4396 (is it OK if there are no resistors between i2s source and sink? some of the usb i2s interfaces i'm looking at don't have them, and i don't see an elegant way to add them into the chain otherwise)
  2. in the now empty holes closest to the ak4396, place a 4 pin 2.54 SIP male header
  3. where the "bodies" of the 51ohm resistors previously were, carefully expose ground plane and solder an additional surface mount 4 pin 2.54 SIP male header. (any caveats or pointers to how to do this? fine sandpaper until i see copper? i would like to leave the board in tact if i want to go back to spdif input later).
  4. use a cat6 UTP ethernet cable for the interconnect. there are 4 twisted pairs, so each pair would have a signal+ground. i would terminate each end of the cable with a (soldered on) crimp connector to mate with the two 4 pin SIP headers on the mini2496 board. (would the standard SIP pins be ok? i've read u.fl is best, but its unfortunately not realistic to do given the constraints of this pcb)
  5. optionally, come up with a way to power off the cs8416 circuit since its unused and would just add noise/emi to the dac (would depowering this completely affect the proper function of the PDN pin on the ak4396, or any other of the connections on the 74HC04?) the three ways i see to do this are:
    • desolder/lift the VD and VA pins (difficult)
    • remove L1 to remove VD power, and lift the input or output pin of the "analog" 3.3v LM1117 to remove VA power (easier)
    • cut traces (bad)

for the usb i2s adapter, there are a few options that use asychronous operation.
  1. diyink cm6631a - isolation
  2. diyink xmos - no isolation
  3. amanero - no isolation
  4. waveio - isolation

i'm leaning towards the cm6631a due to its price and built in isolation. adding an adum4160 into the chain on another dac improved snr considerably. without isolation, it seems like i'm wiring up the dac directly into a usb bus - not ideal.

finally, are there any changes into the operation of the dac that come about with using direct i2s in? which of the leds still work? is there a finicky startup sequence required to get a signal lock, etc.?

thanks,
-matt

edit: removing C28 would provide an alternate ground point for the i2s connection that doesn't require exposing the ground plane

Last edited by tofurky; 3rd October 2013 at 01:56 AM. Reason: another idea for i2s ground connection
  Reply With Quote
Old 28th October 2013, 08:35 PM   #2594
diyAudio Member
 
Join Date: Dec 2009
Location: UK
I've just found a pcb with the ICs soldered on. I have a load of bits and the parts from the upgrade BOM.

I've read through posts,but still have the following question, is there anywhere which lists the placement of parts (including the upgrade parts) as a silkscreen type layout?

Many thanks.
  Reply With Quote
Old 29th October 2013, 09:02 PM   #2595
diyAudio Member
 
Join Date: Feb 2012
there you go, paths and numbering...https://drive.google.com/?authuser=0...UzNzhjODI5MWRm
  Reply With Quote
Old 29th October 2013, 11:03 PM   #2596
diyAudio Member
 
Join Date: Dec 2009
Location: UK
Thanks for the link, I don't have a google account though, is there anyway to login as a guest?
  Reply With Quote
Old 30th October 2013, 09:19 PM   #2597
diyAudio Member
 
Join Date: Feb 2012
https://docs.google.com/file/d/0B-qK...?usp=drive_web

https://docs.google.com/file/d/0B-qK...?usp=drive_web

https://docs.google.com/file/d/0B-qK...?usp=drive_web

https://docs.google.com/file/d/0B-qK...?usp=drive_web

DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532

i don't think you need to be signed for theseClick the image to open in full size.

Last edited by reg66; 30th October 2013 at 09:24 PM.
  Reply With Quote
Old 30th October 2013, 09:43 PM   #2598
diyAudio Member
 
Join Date: Dec 2003
Location: Canada
I have finished experimenting with this DAC kit and moved on to another project.

Therefore I have a fully populated & working board and a bare board with only dac chip soldered for sale.

Picture of the populated board can be seen in here:

DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532

Please send me a pm if anyone is interested in them.
  Reply With Quote
Old 1st November 2013, 06:26 AM   #2599
diyAudio Member
 
Join Date: Dec 2009
Location: UK
Thanks Reg66
  Reply With Quote
Old 8th November 2013, 02:45 AM   #2600
diyAudio Member
 
Join Date: Feb 2012
Location: Ireland
Can anybody tell me how the AK4393 compares to the CS4398?

Reason i ask is i was playing with the USB version of this board with the CS4398 and discovered the USB interface creates distortion so its really only usable with the SPDIF interface. Therefore i have to wonder if this is the better board that i should put my parts/effort into?

Cheers,

Mark
  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
AK4393 burn... CIMONE Digital Line Level 5 24th June 2011 02:12 PM
AK4393 to CS4223? CIMONE Digital Line Level 0 13th December 2009 02:30 PM
AK4393 Serial Configuration Problem Aoxomox Digital Line Level 0 20th March 2009 05:25 PM
AK4393, CS8413 and CS8414 Data Sheets Blue_Max Digital Source 0 23rd December 2004 01:37 PM


New To Site? Need Help?

All times are GMT. The time now is 12:28 PM.


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