Can the Shanling SCD-T200 be modded to accept a digital input? - 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 14th March 2005, 07:42 AM   #1
mattjk is offline mattjk  United States
diyAudio Member
 
Join Date: Aug 2004
Location: Huntington Beach, Ca
Default Can the Shanling SCD-T200 be modded to accept a digital input?

I would like to use it as my main preamp, and use a dvd player as well.
  Reply With Quote
Old 14th March 2005, 10:30 AM   #2
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Default Re: Can the Shanling SCD-T200 be modded to accept a digital input?

Konnichiwa,

Quote:
Originally posted by mattjk
I would like to use it as my main preamp, and use a dvd player as well.
In princile it could be done. It would not be easy or straightforward though. Also, quite frankly the internal "preamp" in the T200 is junk, for want of a better word. On the old version (the Gold & Stainless steel chassis) you change the jumper to the Tube Output PCb to bypass the Volume Control & Preamp circuit, the improvement in sound quality is quite dramatic.

Sayonara
  Reply With Quote
Old 28th December 2008, 12:45 AM   #3
Skov_dk is offline Skov_dk  Denmark
diyAudio Member
 
Join Date: Dec 2008
Hi, This subject is getting interesting once more as the interest of dac's increases with all the new digital storage systems and services now available. I'm very pleased with my scd t-200, and wish to mod it with a digital input option if possible to avoid another big and expensive piece in my system. Any guidelines, references og contact info? that would be awesome, if you could be so kind.

I'll probably eliminate the "preamp" circuit and complete other upgrades while I'm at it.
Thanks a million in advance and best regards.
Soren.
  Reply With Quote
Old 28th December 2008, 03:26 AM   #4
diyAudio Member
 
Join Date: Oct 2001
Location: .
It would help to know more about the innards of the SCD-T200.
  Reply With Quote
Old 13th January 2009, 04:27 PM   #5
Skov_dk is offline Skov_dk  Denmark
diyAudio Member
 
Join Date: Dec 2008
Hi!
The innards are:
4 x 6N3 tubes, 2 for the tube output and 2 for the
headphone output.
Sony KHM-2334AAA drive.
Sony CXD2752R SACD decoding chip,
Burr Brown PCM 1738 24 bit/192kHz DAC with the following datasheet:
http://focus.ti.com/lit/ds/symlink/pcm1738.pdf

Does this bring up any ideas?

Thanks in advance and best regards.
Soren.
  Reply With Quote
Old 14th January 2009, 03:42 AM   #6
diyAudio Member
 
Join Date: Oct 2001
Location: .
It is possible but not easy.The software controlled nature of the PCM1738 complicates matters. The switch between DSD and PCM is software controlled and you would need to intercept that process in order to activate the '1738 which presumably mutes when no disc is present or playing. You would also have to add a second two way switch to select between the SPDIF input and the output of the DSD/PCM selector.
  Reply With Quote
Old 15th January 2009, 03:54 PM   #7
Skov_dk is offline Skov_dk  Denmark
diyAudio Member
 
Join Date: Dec 2008
Luckily I'm a pro software guy, eventhough it might not help in this case.
But are there any guidelines somewhere? just general with modding this sort of chips that way eventually. Or any reference to persons who might know how to do this?

The switching part is farely easy I guess compared to cracking the part with DSD and PCM. But any guidelines are very welcome as well.
Thanks in advance and best regards.
Soren.
  Reply With Quote
Old 17th January 2009, 08:40 AM   #8
diyAudio Member
 
Join Date: Oct 2001
Location: .
The how bit is easy. It is implementing the how bit that is tricky. It is best done with a board designed for the task at hand.
  Reply With Quote
Old 17th January 2009, 06:11 PM   #9
Skov_dk is offline Skov_dk  Denmark
diyAudio Member
 
Join Date: Dec 2008
Aha. So if I just can find the right board then some wire cutting, solding and wiring could do the job with adding an option for a digital input ?
And it should be in connection with a switch between the SPDIF input and the output of the DSD/PCM selector.

Now how to find the right board if possible?
  Reply With Quote
Old 22nd January 2009, 04:18 AM   #10
diyAudio Member
 
Join Date: Oct 2001
Location: .
There is no board that quite does what you need. They are either too big, require a lot of add ons or major modification and any combination of boards would probably take up too much space.
Some other things to consider;
a. How to switch between inputs? Does one add a switch to the front panel or perhaps set up the unit to automatically default to the external input in the presence of audio data? Is this new input under remote control and if it is to be, how?
b. How does one indicate the selected input ?
c. What is an acceptable level of cosmetic alteration?
  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
earthquake amp t200/4 steliosssss Car Audio 2 12th June 2009 04:24 PM
Adding a digital out to Shanling MC30 nvrgdenuf Digital Source 7 26th December 2008 05:45 PM
D amps than accept Digital In? evad Class D 5 31st March 2008 04:37 PM
problems FR125SR + SI T-amp input modded disjunction Full Range 10 20th November 2007 04:56 PM
Replacing Cones on a Technics SB-T200 debarros Parts 2 14th June 2005 07:22 AM


New To Site? Need Help?

All times are GMT. The time now is 11:47 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