CS8412, PCM67k, SPDIF output on transport - 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 May 2003, 04:23 PM   #1
diyAudio Member
 
Join Date: Apr 2002
Default CS8412, PCM67k, SPDIF output on transport

Anyone have any thoughts/experience on the PCM67k, a hybrid multi/single bit DAC by Burr Brown?

Also any posts on tweaking the SPDIF output of transports and what about tweaking the input for the CS8412?

Thks
Ryan
  Reply With Quote
Old 29th May 2003, 05:09 PM   #2
Banned
 
Join Date: Feb 2002
Location: As far from the NOSsers as possible
Default Input tweaking......

In a nutshell:

Put a linear stage in front of it......on both inputs.....drive it differentially. A good transformer would help. Make sure the input is as close to 75 ohms as possible, with no reactance. Harder to do than you might think. May keep you busy for a long time, but it will be worth it.

Jocko
  Reply With Quote
Old 29th May 2003, 05:31 PM   #3
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
The PCM67 was advertised by BB for use in digital audio whereas the PCM69 was meant for musical instruments. This had to do with digital offset occuring at bit 4 ( PCM69 ) and 9 ( PCM67 ). But I see cdplayers with the PCM69 in it

Does somebody know why they use 69 instead of 67 ????

Quote:
Also any posts on tweaking the SPDIF output of transports and what about tweaking the input for the CS8412?
Ryan, please use the Search function, there are a lot of threads on this CS8412 subject. When you search for "transformer" you'll find this thread under the group Digital:

The new Nonoz II DAC page !!!

If you search for "CS8412" you'll see more threads than you'll like !
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 30th May 2003, 08:37 AM   #4
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Default Re: CS8412, PCM67k, SPDIF output on transport

Quote:
Originally posted by Dr.H
Anyone have any thoughts/experience on the PCM67k, a hybrid multi/single bit DAC by Burr Brown?

Also any posts on tweaking the SPDIF output of transports and what about tweaking the input for the CS8412?

Thks
Ryan
Hello Ryan

At least use reclocking at the SPDIF output, and use a low jitter clock. It will decrease the SPDIF jitter to a great extend, and your DAC (and ears) will like that

regards
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 30th May 2003, 03:41 PM   #5
Banned
 
Join Date: Feb 2002
Location: As far from the NOSsers as possible
It is an output!!! I need to stop reading this after laying out PCBs. Either that, or get a bigger monitor.

(This is where Phred screams "How much bigger do you need it! Isn't it big enough already?" Apparently not.)

Anyway.....my comments were for inputs. Follow Guido's advice.

Jocko
  Reply With Quote
Old 30th May 2003, 07:24 PM   #6
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Quote:
Originally posted by Jocko Homo
It is an output!!! I need to stop reading this after laying out PCBs. Either that, or get a bigger monitor.

(This is where Phred screams "How much bigger do you need it! Isn't it big enough already?" Apparently not.)

Anyway.....my comments were for inputs. Follow Guido's advice.

Jocko
Hi Jocko

squared eyes......

At least half of your advice holds for outputs too.....

hang on layouting
__________________
Guido Tent
www.Tentlabs.com
  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
SPDIF Output Korr Digital Line Level 8 25th February 2011 10:02 AM
Asyncronous reclocking of transport SPDIF output Dr.H Digital Source 29 18th July 2005 08:39 PM
Different ways to transport SPDIF Audio signals oehlrich Digital Source 0 2nd April 2005 03:39 PM
Mods to the SPDIF output of a CD transport Dr.H Digital Source 14 16th July 2004 11:08 AM
DIY SPDIF output on Marantz CD-46 sikkek Digital Source 5 9th October 2002 04:22 PM


New To Site? Need Help?

All times are GMT. The time now is 05:34 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