Schematic Tube Analog Output Stage???

hoanghieu · 18th May 2011, 04:42 PM

Help!Schematic tube output stage of CDP Audio Note AN-CD1(used DAC PCM 1710)....Help me!!!???

pglusz · 22nd July 2011, 05:44 PM

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

Copyrighted material removed

Globulator · 22nd July 2011, 06:36 PM

I'd suggest rewiring the heater and using an ECC88 instead..

kevinkr · 22nd July 2011, 08:38 PM

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.

pglusz · 22nd July 2011, 08:48 PM

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.

pglusz · 22nd July 2011, 09:31 PM

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!

18th May 2011, 04:42 PM	#1
hoanghieu diyAudio Member Join Date: Mar 2010	Schematic Tube Analog Output Stage??? Help!Schematic tube output stage of CDP Audio Note AN-CD1(used DAC PCM 1710)....Help me!!!???

22nd July 2011, 05:44 PM	#2
pglusz diyAudio Member Join Date: Jul 2005 Location: Warsaw, Poland	Schematic TubeStage AudioNote CD1 As requested. What do you plan to change in this old CD? Copyrighted material removed

22nd July 2011, 08:38 PM	#4
kevinkr diyAudio Moderator 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. __________________ www.kta-hifi.net

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22nd July 2011, 06:36 PM	#3
Globulator diyAudio Member Join Date: Aug 2004 Location: Cambridge, England.	I'd suggest rewiring the heater and using an ECC88 instead..

22nd July 2011, 08:48 PM	#5
pglusz 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.

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