Technics SL-PG400A - SPDIF ? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, 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 27th December 2008, 06:58 PM   #1
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
Default Technics SL-PG400A - SPDIF ?

Hello,

I got a old Technics CDP with CDM4/19 Laserunit.

To use it as a Transport (...just for fun - normally I use my Shigaclone ) I need a SPDIF-output.

The Player has got only a optical-output.

Is there a (easy) way to get SPDIF out of that Box???

Thank you and greetings

Markus
  Reply With Quote
Old 28th December 2008, 08:22 PM   #2
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
...no Idea???
  Reply With Quote
Old 28th December 2008, 10:12 PM   #3
jitter is offline jitter  Netherlands
diyAudio Member
 
jitter's Avatar
 
Join Date: Aug 2004
Location: Eindhoven, The Netherlands
You say you have a shigaclone. If you made it yourself, you probably already know how. I'm not sure, but I think the signal of Dout in your 'clone is no different from the signal in the Technics driving the Toslink transmitter...
  Reply With Quote
Old 28th December 2008, 10:38 PM   #4
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
Hi Jitter,

yes I made the clone by myself.
The description from the Pro`s in the "Shigaclone-Post" is very good and it helps beginners like me to do such fine stuff...

AND the SPDIF on the Shigaclone PCB is marked as Dout!
Its not marked on the Technics-PCB.

I`ve read Toslink is the "same" Signal as SPDIF an if you have Toslink you also have SPDIF - but where can I pick it up?

Maybe you can help me further?

Greetings
Markus
  Reply With Quote
Old 28th December 2008, 10:49 PM   #5
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
simply said - SPDIF is driving "LED" in Toslink

find any schematic where both are drawn , and you'll see
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 28th December 2008, 11:09 PM   #6
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
...sometimes it`s just easy

THANK YOU for that!!!

Markus
  Reply With Quote
Old 28th December 2008, 11:48 PM   #7
jitter is offline jitter  Netherlands
diyAudio Member
 
jitter's Avatar
 
Join Date: Aug 2004
Location: Eindhoven, The Netherlands
Ah, the coin has dropped .

What I'd do is rip out the Toslink transmitter and check the signal level on the pad where pin 4 used to be (datsheet).
I'm expecting it to be the same as the 'clone's. If so, I'd use the same value resistors as needed for the Shigaclone to get correct S/PDIF signal level and 75 Ohm output impedance..

BTW, I'm going to build one too, today I ordered a RC-EZ51.
  Reply With Quote
Old 29th December 2008, 04:14 PM   #8
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
Hi Jitter,

thank you!

Quote:
BTW, I'm going to build one too, today I ordered a RC-EZ51
...and you will love it!!!
  Reply With Quote
Old 29th December 2008, 05:33 PM   #9
jitter is offline jitter  Netherlands
diyAudio Member
 
jitter's Avatar
 
Join Date: Aug 2004
Location: Eindhoven, The Netherlands
I read about 90% of the Shigaclone thread and it seemed to me that everyone has a very positive experience with this cheap little transport (barring some broken stuff due to mistakes)! My method of upgrading will probably be slightly different, though.

As experiment, today I converted a Toslink input to coaxial input on my old (and partly broken) CD-recorder. That's a little more work than converting a Toslink output to coaxial output due to the fact that the S/PDIF signal needs to be amplified to 5 Vpp, but still pretty easy. You just need a few more parts.

I'm browsing the internet for a really affordable secondhand DAC to get my Shigaclone project on the way...
I stumbled upon a multiple input Denon. The weird thing of this DAC is that 3 of the 5 inputs are Toslink . It's a pretty standard quality DAC, but it already has an upgraded analogue output section. If I decide to buy it, I'll first convert the optical inputs to coax (hence my experimenting today) and maybe apply some more tweaks I found on the internet for this particular model.
  Reply With Quote
Old 29th December 2008, 10:31 PM   #10
101dm is offline 101dm  Germany
diyAudio Member
 
Join Date: Nov 2007
I picked up S/PDIF from my TECHNICS!
It`s VERY easy...

@Jitter:
Some people (me too) using the Shigaclone with a NOS-DAC.
I got the one from Scott Nixon and I'am very satisfied.
There are many schematics in the Internet with the Philips TDA 1543 DAC (needs no "output-stage") so you can DIY one just for testing it.
Maybe you like it!?

Greetings
Markus
  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 on cdrom to SPDIF on Digi Crossover davidallancole Digital Source 0 11th January 2007 03:26 AM
cdrom spdif quality / sound card spdif metebalci Digital Source 0 2nd September 2006 07:16 PM
spdif out to double spdif in balthazard Digital Source 0 1st March 2005 06:52 AM
SPDIF: VCC / SPDIF which way round? rogercameron Digital Source 6 18th April 2004 10:29 AM
SPDIF to AES/EBU Kari Digital Source 4 21st February 2004 11:29 PM


New To Site? Need Help?

All times are GMT. The time now is 03:56 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