Moding CD player power supplies - 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
Thread Tools Search this Thread
Old 13th December 2003, 12:46 AM   #1
Salsero is offline Salsero  United States
diyAudio Member
Join Date: May 2003
Location: Texas USA
Cool Moding CD player power supplies

Has anyone considered using an outboard medical linear regulated power supply for their CD players? The medical supplies are designed to be low noise and can be obtained for approximately $50 for an 18V / 1.5A supply. One can then feed this to individual regulators for the various components Ii.e. transport motor, clock, analogue stage, etc...........).
A second question: does anyone have a mod for the output stage of a DAC using class A Fets? I think that with a few mods like these and a better clock one can get some pretty good sound out of an economical CD player.
I look forward to your comments.
  Reply With Quote
Old 13th December 2003, 03:00 PM   #2
pburke is offline pburke  Germany
diyAudio Member
Join Date: Nov 2003
Location: Madison Wisconsin
I'm also interested in using external power for my CD player. IS there any reason why batteries should be avoided? Does the transport suck up too much juice to make it a reasonable solution for all the voltages? If yes, what part of the PS should be kept wired to the wall outlet?

In terms of Power supplies - I have this nice Hewlett Packard 1-20V DC 10 amp lab bench power supply I currently use for my slot car tack () which I could easily set to any voltage needed in the CDP to do some testing regarding the impact of outboard power.

As long as the original PS is in the player, though - would I hear the full difference by substituting the external DC source for some of the leads in the player? I suppose the ultimate mod is to completely remove teh original PS form the transport.

  Reply With Quote
Old 13th December 2003, 03:38 PM   #3
diyAudio Member
Peter Daniel's Avatar
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Check the last posts in this thread:
Less simple I/V for TDA1543

I'm using batteries for DAC and output stage with very good results. The transport and logic is still powered by the original supply.
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 13th December 2003, 04:26 PM   #4
diyAudio Member
Join Date: Feb 2002
Location: Canada
I'm currently looking at super-regulators like or similar to the ones offered by ALW (ALW Audio). And, although I cannot speak for first-hand experience yet the reports I'm getting are that these super regulators are an excellent step towards creating a first-class power supply.

  Reply With Quote
Old 13th December 2003, 04:31 PM   #5
diyAudio Member
Join Date: Oct 2002
Location: Winnipeg MB Canada
I have used a Corcom 6EHQ1 medical grade filter with good results in 2 or 3 CD players.

  Reply With Quote


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
Parallel a dual power supply or two power supplies? Thunau Power Supplies 12 16th February 2007 04:21 AM
CRC Power Supplies jleaman Solid State 1 12th March 2005 05:51 AM
HV power supplies santa Swap Meet 0 17th January 2005 10:52 PM
Power Supplies guitargully Parts 0 6th February 2004 03:45 AM
Regulated Power Supplies for Low Power Amps PTL60 Solid State 18 6th February 2002 06:24 AM

New To Site? Need Help?

All times are GMT. The time now is 04:38 PM.

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