Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

Adding Wordclock inputs to source
Adding Wordclock inputs to source
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
Thread Tools Search this Thread
Old 20th July 2006, 08:10 PM   #1
mlihl is offline mlihl
diyAudio Member
Join Date: Sep 2004
Location: Everywhere
Question Adding Wordclock inputs to source


I want to learn how to add a BNC Wordclock input to a transport such as a soundcard, CD player or Squeezebox? How would this work?
Simply replacing the original crystal oscillator and leading a shielded cable out?

Assuming I have a very stable, low-noise clock near my DAC - when I synchronize my sources with this clock, I would dramatically reduce jitter and this would be the perfect choice for a "clean" system as opposed to using ASRC's which are obviously only a poor choice for a low jitter system. Is this correct?

Maybe someone can shed some light on this or point me to some threads or reference sources so I can learn more about this.


  Reply With Quote
Old 24th July 2006, 02:27 PM   #2
Guido Tent is offline Guido Tent  Netherlands
diyAudio Member
Join Date: Dec 2001
Location: Eindhoven
Hello Mike

You'd need a PLL circuit to go from 44.1 KHz to the original crystal frequency.

Guido Tent
  Reply With Quote
Old 25th July 2006, 02:36 AM   #3
Alexandre is offline Alexandre
diyAudio Member
Join Date: Jan 2004
Location: Brazil

One alternative is to buy a pro soundcard with wordclock i/o. A very good one is the RME Digi96/8 PAD with the WCM expansion.

Another way of implementing the system is to send the master clock directly to the transport, preferably using an optical interconnect. Im not sure if the standard toslink transmitters and receivers can handle 11.2896 MHz or higher, please check that.

The third and best way (IMO): in the DAC, use a spdif tx IC to generate spdif with your clock. You can use any soundcard with spdif i/o as your transport. Or you can slave your cdplayer by adding a spdif rx to recover the 11.2896 MHz (if the MCK of your CDP is 256fs).

This last method is how I did it and it works flawlessly. I used optical interconnects and my soundcard is the RME Digi96/8 PST.

Best regards,
  Reply With Quote


Adding Wordclock inputs to sourceHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
wordclock i/o stef1777 Digital Source 0 18th February 2005 08:11 PM
Adding Digital Inputs ?! Blue_Max Digital Source 3 25th January 2005 07:12 PM
Adding more inputs for my preamp bonsai171 Solid State 1 11th March 2004 10:59 PM
Wordclock distribution box-anyone? Ricren Digital Source 0 22nd October 2003 09:20 PM
Adding a Sub output... sum the two inputs? PaulHilgeman Solid State 9 25th February 2003 04:51 PM

New To Site? Need Help?

All times are GMT. The time now is 05:12 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio