Circuit to convert coax digital signal to optical? - 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 8th November 2001, 02:00 AM   #1
diyAudio Member
 
Join Date: Nov 2001
I have an AMC CD8b CD player, which i'm very happy with, but which only has coax digital out. I'd like to be able to connect it to my MiniDisc, which takes a TOSLink (optical) digital signal.

Is there a simple circuit i can build to convert the signal? I'm imagining something with a cheap buffer IC and a red LED...



Thanks,

bobo

  Reply With Quote
Old 8th November 2001, 05:06 AM   #2
diyAudio Member
 
Join Date: Aug 2001
I don't know of a circuit, but you can get devices for like $60. I have a CO2 midiman that will do this. I know this is not exactly what you asked for but as an alternative if no body else can help. A couple companies make similar products.
  Reply With Quote
Old 8th November 2001, 05:13 AM   #3
diyAudio Member
 
Join Date: Nov 2001
Thanks, but i'm fairly sure such schematics exist on the 'net. I've seen one for converting the digital out from a computer's CD-ROM drive to optical, so i would assume that there would be designs for the more common task of converting coax digital to optical digital.


here's hoping...


-robo
  Reply With Quote
Old 8th November 2001, 05:27 AM   #4
diyAudio Member
 
Join Date: Aug 2001
Check out this link, click on view thread. It may not be really what you are looking for. Also you may want to post asking that specific question on that forum I have found that place to be very helpful (start at Oade.com then go to tapers section, then forum) The guy who runs is Doug Oade is very knowledgable and usually helps alot.
http://64.27.110.248/cgi-bin/miva?sh...v+message=1113
The site is geared towards people who record concerts (like the Grateful Dead, Allman Brothers) just so you know what the place is about. Maybe another place to try,
David
  Reply With Quote
Old 8th November 2001, 06:06 AM   #5
diyAudio Member
 
Join Date: Oct 2001
Location: .

Try this http://www.minidisc.org
  Reply With Quote
Old 8th November 2001, 08:41 AM   #6
diyAudio Member
 
Taligent's Avatar
 
Join Date: Nov 2001
Location: Austin, TX
If you're intent on building your own I put up <A HREF="http://www.taligentx.com/projects/opticalconverter">a project</A> a while ago - your best best if you just want a single conversion (one input to one output) is to use some of the converters available from <A HREF="http://www.soundprofessionals.com">The Sound Professionals</A> (Audio Hardware -> Digital Converters). At $25 it's hard to beat it by building the unit yourself...I'll get around to updating the page above to reflect availability of this unit.
  Reply With Quote
Old 12th November 2001, 02:51 PM   #7
diyAudio Member
 
Join Date: Sep 2001
Location: Finland, Ostrobothnia
I simply used a buffer, a resistor and a red LED. Worked fine. Use a Toshiba TOSLINK module if you want a better light transmitter. Look for schematics at for instance http://www.epanorama.net. Elektor elektronics have also published these types of circuits (splitters, DACs, ADCs etc.).
  Reply With Quote
Old 16th December 2002, 01:40 PM   #8
A'af is offline A'af  Indonesia
diyAudio Member
 
A'af's Avatar
 
Join Date: Nov 2001
Location: Indonesia, Jakarta
hey folk, would you help me about the change equipment with toslink (optical) output to have coax output, i want build my old Laserdisc player be a transport, I think a few component can added in the box to get coax out, thanks for attn and companion
  Reply With Quote
Old 16th December 2002, 06:11 PM   #9
diyAudio Member
 
Join Date: Sep 2001
Location: Finland, Ostrobothnia
Everything you need you should find at http://www.epanorama.net/documents/audio/spdif.html . Consider also to make an optical to coax converter on your receiver if you don't have optical inputs. Optical is sometimes better to use to avoid ground loops (I have experience of this). This is a more expensive solution, though.
  Reply With Quote
Old 16th December 2002, 06:52 PM   #10
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Optical gets rid of the ground loops that shouldn't exist considering there should be an AC-coupled pulse transformer in there somewhere. It also adds a pile of jitter.
  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
schematic for an optical to SPDIF (coax) circuit jarthel Digital Line Level 13 13th November 2008 02:15 PM
FS: Digital Signal Converter- Optical in Coax Out akunec Swap Meet 0 16th May 2007 07:04 AM
Problem: intermittent optical digital signal dropout? faustian bargin Digital Source 0 6th April 2004 09:21 PM
Optical/Coax to analog? soundNERD Digital Source 2 29th September 2003 03:01 AM
DIY Dolby decoders (with optical and coax inputs) Jeeves_Moseley Digital Source 1 1st November 2001 12:59 PM


New To Site? Need Help?

All times are GMT. The time now is 04:11 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