CD upgrading? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 18th June 2017, 05:54 PM   #1
diyAudio Member
 
Join Date: Apr 2009
Default CD upgrading?

Hi. Just getting into CD upgrading with new opamps inthe output stage.
Have the amps just not installed yet.
But my question is about putting in a new clock.
That seems like a major redesign, which shows the level of
knowledge I have about the guts of these incredibility complex machines.
Im an retired HP 30 yr tech and understand electronics so
feel free to talk the talk.
thanks for any info. Educate me.
  Reply With Quote
Old 18th June 2017, 06:29 PM   #2
rayma is offline rayma  United States
diyAudio Member
 
Join Date: Apr 2011
Location: Wisconsin
Quote:
Originally Posted by oldhifiguy View Post
my question is about putting in a new clock.
There are upgrade clock pcbs available for CD players. Or, get an external D/A converter box.
  Reply With Quote
Old 18th June 2017, 06:49 PM   #3
carolus is offline carolus  Belgium
diyAudio Member
 
Join Date: Jan 2005
Location: Brussel
Quote:
Originally Posted by oldhifiguy View Post
..... getting into CD upgrading ...
......thanks for any info.....
FYI.
TEAC P2 & Neutron Star 2 (upgrade)
  Reply With Quote
Old 18th June 2017, 06:50 PM   #4
diyAudio Member
 
Join Date: Apr 2009
It so happens that my CDP has no digital output and therefore cannot connect an external DCA so that option is out.
The xtal is 67.xxxxx Mhz and I have not so far found a clock pcb of that freq.
  Reply With Quote
Old 18th June 2017, 07:31 PM   #5
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
67.7376 MHz ?

Designing an oscillator to run at those speeds is one thing, making it a standalone PCB and delivering that signal to its destination is quite another. It will be divided down internally within the player before it is used and as such, the internal clock may well be much better than you might think.

It doesn't matter how good an external oscillator is, you are left with the problems of powering it, and powering it such a way that it doesn't create additional issues, and then of cleanly delivering its output with no degradation.

Unless you have the means to verify that a measurable improvement has occurred then I would probably leave well alone tbh.
  Reply With Quote
Old 18th June 2017, 07:42 PM   #6
diyAudio Member
 
Join Date: Apr 2009
you're rite mooly.
and all I Read is esentially what you said.
But I had to look into it for my technical interest to see if it was
reasonable to do or run away fast from such a thin.
The latter sounds like the best way to go.
Thanks all for your info.
  Reply With Quote
Old 18th June 2017, 08:01 PM   #7
DF96 is online now DF96  England
diyAudio Member
 
Join Date: May 2007
Quote:
Originally Posted by oldhifiguy
But my question is about putting in a new clock.
That seems like a major redesign, which shows the level of
knowledge I have about the guts of these incredibility complex machines.
Im an retired HP 30 yr tech and understand electronics so
feel free to talk the talk.
Unlike most people who 'upgrade' clocks in CD players, you know enough to suspect that it might not be as easy as some claim. This is probably one of those 'upgrades which if you know enough to make a success of it then you probably know enough to realise that it is not necessary.
  Reply With Quote
Old 18th June 2017, 10:14 PM   #8
phase is offline phase  United States
diyAudio Member
 
Join Date: Oct 2004
The power supply to the clock can make a difference, I try to use a solid polymer type of capacitor that doesn't have an extremely low esr. Usually around 100uf, and no bypass works well, but the inductance of the circuit may prevent this from working in certain situations.

The dac output filter is another place where some better passive parts may well benefit the sound.

You could search and read about what others have done for weeks straight probably, filtering the chaff from the wheat all the while...
  Reply With Quote
Old 18th June 2017, 10:18 PM   #9
diyAudio Member
 
Join Date: Apr 2009
correct df96, but being somewhat of a newBE at CD complexity
I had to ask around and educate myself abit before doing anything
which mite not be all that worthwhile in the longrun.
Decided its not worth the trouble.
Thanks all for the eddycation.

Ps: already got up to speed on OPAMP rolling on the outputs.
Looking forward to the 1st go to see how it turns out.
Its just too flaming hot , 107, to do anything today.

Last edited by oldhifiguy; 18th June 2017 at 10:21 PM.
  Reply With Quote
Old 19th June 2017, 07:23 AM   #10
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Opamp swapping can be rewarding, but also has its pitfalls:

Swapping Op-Amps... you have checked to see it's stable haven't you ?

If they are dual opamps (5532 4558 etc) then you probably stand a better chance of them being 'plug and play' whereas singles may not be guaranteed so easy. As always, verify by at least using a scope and seeing nothing untoward is going on.
  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
upgrading CD clock - TCXO 02GF74 Digital Line Level 11 2nd May 2016 09:30 AM
Advised Need - Upgrading CD Player sometimesuk Digital Source 8 19th October 2008 06:34 AM
Newbie needs help upgrading CD Player Stew Digital Source 17 17th January 2008 01:59 PM
Upgrading the Shanling cd-t 100 folkeb Digital Source 0 15th August 2006 05:53 PM
NAD CD-502, worth upgrading? cowanrg Digital Source 0 15th October 2002 04:53 AM


New To Site? Need Help?

All times are GMT. The time now is 10:23 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki