Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 May 2011, 04:42 PM   #1
diyAudio Member
 
Join Date: Mar 2010
Default Schematic Tube Analog Output Stage???

Help!Schematic tube output stage of CDP Audio Note AN-CD1(used DAC PCM 1710)....Help me!!!???
  Reply With Quote
Old 22nd July 2011, 05:44 PM   #2
pglusz is offline pglusz  Poland
diyAudio Member
 
Join Date: Jul 2005
Location: Warsaw, Poland
Default Schematic TubeStage AudioNote CD1

As requested.
What do you plan to change in this old CD?

Copyrighted material removed
  Reply With Quote
Old 22nd July 2011, 06:36 PM   #3
diyAudio Member
 
Globulator's Avatar
 
Join Date: Aug 2004
Location: Cambridge, England.
I'd suggest rewiring the heater and using an ECC88 instead..
  Reply With Quote
Old 22nd July 2011, 08:38 PM   #4
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Please note it is OK to post a hand drawn or redrawn CAD schematic of the AN CD1 circuitry, but it is not OK to post the original Audio Note schematic here without their express permission and an acknowledgment that such permission has been granted.
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 22nd July 2011, 08:48 PM   #5
pglusz is offline pglusz  Poland
diyAudio Member
 
Join Date: Jul 2005
Location: Warsaw, Poland
Dear kevinkr and all Colleagues,
This is absolutely NOT the original schematic or any part of it. I have drawn this myself in ...CorelDraw Essentials, based on the original AN board on hand.
I had never had the original schematic of AN CD1.
  Reply With Quote
Old 22nd July 2011, 09:31 PM   #6
pglusz is offline pglusz  Poland
diyAudio Member
 
Join Date: Jul 2005
Location: Warsaw, Poland
I also applied rewiring of heater supply for different tubes - 2 photos attached.

The schematic (not hand-made but CorelDraw-made...) with realised mods to power supply to DAC - attached. Please note, that the trafo is not "toroid" but "EI 40W" and it has also different heater windings than original, made by AN...

Good luck!
Attached Images
File Type: jpg 6.3V Switch for different tubes.jpg (155.7 KB, 200 views)
File Type: jpg 6.3V Switch for different tubes - bottom.jpg (181.8 KB, 183 views)
File Type: jpg Power Mod for Tube DAC_ANCD1.jpg (181.9 KB, 197 views)
  Reply With Quote
Old 10th August 2012, 12:41 PM   #7
diyAudio Member
 
Join Date: Aug 2012
Hi all,

Sorry to ask as I am quite a noob in this area, but I think the lamp of my AN-CD1 just died.
And since I already heard it could be improved by using a different lamp, I wondered if I understood this post right? Replacing the 82 by the 88 would work, but requires a bit of additionnal wiring?

Thanks in advance

Click the image to open in full size.
  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
J-fet - tube DAC analog stage regal Tubes / Valves 0 11th November 2010 11:14 AM
Analog output stage for DAC (AK4584) Ekkeri Digital Line Level 3 22nd March 2009 06:37 PM
Analog output stage for cd sopapo Solid State 0 6th September 2006 08:17 AM
JVC XL-V1100 output stage schematic ? Bernhard Digital Source 0 7th April 2005 07:58 PM
Analog Output Stage Alien8 Digital Source 6 12th March 2004 09:02 AM


New To Site? Need Help?

All times are GMT. The time now is 07:45 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