DAC-AH with Reclocking Module - 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 7th March 2008, 02:46 PM   #1
diyAudio Member
 
Join Date: Feb 2008
Default DAC-AH with Reclocking Module

hello everyone
In case if anyone is interested in modding their Dac-AH's here's a great one for you
I pretty much took the idea from DDDAC1543 by Doede! Thank you D.
It's very simple.
I made a reclocking module with its own power supply and added to my dac-ah.
Improvement? Hell yeah
here's a picture of my module.

it's very unorganized but it works like a charm.
Attached Images
File Type: jpg img_8203-1.jpg (28.7 KB, 246 views)
  Reply With Quote
Old 7th March 2008, 04:38 PM   #2
Puffin is offline Puffin  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: U.K
I have a Dac Ah that I modded to passive output. Can you let us that the info to carry out this mod.
  Reply With Quote
Old 7th March 2008, 09:26 PM   #3
diyAudio Member
 
Join Date: Feb 2008
Quote:
Originally posted by Puffin
I have a Dac Ah that I modded to passive output. Can you let us that the info to carry out this mod.

hey there,
this is fairly easy except for cs8414 part
I do have this with bypass mod. the reclock works great with any mods as it removes jitters by alot (more info at www.dddac.de)

step by step method
1.www.dddac.de download the schematics AND the PCB prints(make things very easy) (Thanks D) (one pdf file)

2.Look for the schematics of 5V power supply for both Tentlab XO clock and the counter 74VHC..(they are the same)
(Since you by passed the opamps, you can actually mod the power supplies for opamps so it outputs +5V.) I didnt do this as i didnt know how to create a clean supply so i just followed doede's)

3.make two identical power supplies and Tentclock part and the counter part on one jumper board in the same layout as that of doede's (since my jumper board didnt have the ground, I connected all the ground points and connected to one of the ground points on main Dac-ah.

4.after your done with your board you should have 4 wires hanging out for/from
I. Original power supply (I connected to the +15V supply before the opamp)
II. Ground (I connected it to the ground next to +15V)
III.FS wire from 74VHC - this goes to FS pin of CS8414 (hard to solder.. get surface mount solder or use needle thin soldering iron)
IV.Sck wire from 74 VHC -this goes to Sck pin of CS8414(same as above)

5.Your CS8414 is prolly outputing FS and Sck right now so we have to change the mode of CS8414 by supplying high to pin M0. this will make your CS8414's FS and Sck pins as inputs. This is the trickiest part...
First you need to disconnect this pin from grounded. so go ahead and suck all the lead out of this pin... what you need to do is lift this pin so that its not touching grounded... the easiest way to lift is actually to push it to either side, make sure that you dont break the pin off... once the pin is lifted and detached from the ground, using just little amount of lead, solder the pin to the one next to it, since that one is supplied high (either side is fine, they both are supplied high)

(Remove capacitors and other components around the CS8414 before doing any of these small soldering and lifting because they really get in the way)



**ALWAYS USE MULTIMETER TO CHECK THE CONNECTIVITY AND ALSO CHECK THE VOLTAGE SUPPLY BEFORE TURNING IT ON**

any questions, just leave a reply
  Reply With Quote
Old 8th March 2008, 05:27 PM   #4
diyAudio Member
 
Join Date: Feb 2008
you do not have to connect FS and SCK from clock directly to cs8414 since cs8414 is now input mode.. so just somewhere between cs8414 and tda1543... probably before the resistors before the tda1543
  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
Reclocking I2S dsavitsk Digital Source 17 24th November 2009 03:33 PM
Decoder output: how jittery, worth reclocking? And "double" reclocking hollowman Digital Source 0 17th July 2009 01:39 PM
Reclocking IC Bem-bem Digital Source 1 16th July 2007 08:11 AM
Reclocking diyman Digital Source 1 17th November 2006 01:03 AM
Non os reclocking, I2S and DEM reclocking Zodiac Digital Source 13 16th January 2004 11:24 PM


New To Site? Need Help?

All times are GMT. The time now is 12:54 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