Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

CDPro2 9V modification
CDPro2 9V modification
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 16th September 2009, 05:57 AM   #1
Sunsun22 is offline Sunsun22  Hong Kong
diyAudio Member
Sunsun22's Avatar
Join Date: Jul 2004
Location: Hong Kong
Default CDPro2 9V modification

I assembled a CDPro2 transport from hifidiy.net. It sounds great on the start but as a DIYer, you always look for modification. The power supply is using two stages LM317. One 5V for CDPro2 (digital circuit), One 5V for onboard digital circuit and one 9V for CDPro2.

I changed the 5V power supply for CDPro2 to DEXA. The background becomes more quiet. Now my question is - would there be great improvement by changing the 9V supply? Bearing in mind that this 9V is only for the drive motor.

  Reply With Quote
Old 20th September 2009, 07:58 AM   #2
Sunsun22 is offline Sunsun22  Hong Kong
diyAudio Member
Sunsun22's Avatar
Join Date: Jul 2004
Location: Hong Kong
It seems no one has tried to modify the 9V for CDPro2 here, isn't it?
  Reply With Quote
Old 21st September 2009, 09:17 AM   #3
simon dart is offline simon dart  United Kingdom
diyAudio Member
simon dart's Avatar
Join Date: Mar 2004
Location: Herefordshire
My experience is that different 9V supplies can make a difference to the performance. I went from a plain vanilla LM317 reg to a full blown 1.2A shunt reg kindly designed by a friend of mine (I couldn't cope with doing that!). The improvement was fairly subtle but worth having. The bass was cleaner and felt a little more extended.

The 9V drives the motor and laser servos as far as I know so high current and good transient performance are what to look for.

Bill Bryson: It is no longer permitted to be stupid and slow. You must choose one or the other.
  Reply With Quote


CDPro2 9V modificationHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
CdPro2 with tentlabs XO3 MacMic Digital Source 1 30th January 2008 06:36 AM
can CDPro2 reclock with Big Ben ackcheng Digital Source 5 28th August 2004 08:57 PM
CDPRO2- do you just add PS? lgreen Digital Source 7 24th February 2004 09:48 AM
EIJ on CDPRO2 DonJuan Digital Source 8 17th February 2004 04:09 AM

New To Site? Need Help?

All times are GMT. The time now is 05:49 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio