Marantz CD63 & CD67 mods list

[RCruz]

Originally posted by rowemeister
Hehe

Not literally I hope

Well, i must admit I am a bit worried... as everytime I need to do something in the CDP ... But I am getting much better now

[bigerik]

Has anyone made a Cliffs Notes version of this thread? Reading well over 400 pages is a pretty big commitment!

BTW, was the KI ever sold in North America? Been looking for one for a while and have found none on this side of the pond.

[RCruz]

Just aks for a subject and maybe some of us can help....
But the better way is to keep reading. I have not been able to read it all... (the truth is, in the beguining I had some difficulty grasping some subjects.... Thanks to the wonderfull team, now I am happy to say I know the language )



Ricardo

PS... And I own one of the best CD53 in the world...!!!

[e1roy]

Hi all

could someone please supply me the schematics to build the Regs for:

LM337 -12v
LM317 +12v
LM317 +5v

Thanks

[avr300]

Originally posted by e1roy
Hi all

could someone please supply me the schematics to build the Regs for:

LM337 -12v
LM317 +12v
LM317 +5v

Thanks

You could start around here.

http://www.diyaudio.com/forums/showt...38#post1099238

[bigerik]

Originally posted by RCruz
[B]Just aks for a subject and maybe some of us can help....
But the better way is to keep reading. I have not been able to read it all... (the truth is, in the beguining I had some difficulty grasping some subjects.... Thanks to the wonderfull team, now I am happy to say I know the language )



Ricardo

PS... And I own one of the best CD53 in the world...!!!

Well, early in I found this list of to do's. Is it still a pretty good way to go about it?


1) Output caps bypassed - little bit more open sound and much better bass (and remove muting transistors)
2) Op amps - fit something like a OPA2134 first, you wont beleive the difference. You can at a later date change for 627 on browndogs etc to push the sound further.
3) Clock - I have that Audiocom clock from ebay - bargain. Dont worry about making a dedicated supply just yet unless you are confident.
4) HDAM bypass - a must do mod once the op amps are changed. 5) change all the resistors around the opamps to 0.1%tol types and all the blue se caps to silver mica.
6) Work on a way of seperating all the 5V rails to the DAC and the Decoder. You have Analogue 5v , digital 5v and clock ref 5V to these. Even using 3x cheap 7805 will give benefits (trust me I have tried it) Here is the extensive reg pcb work I have done http://www.diyaudio.com/forums/show...0&pagenumber=37 Dropping in a few good caps like Black Gates will help too.
7) You will need a seperate +12V supply for the clock. That reg package is very good from audiocom on ebay. I would buy them to suit what you are going to do though. The package they have is to replace the 2 12V regs and one 5V reg. If you are going to make seperate regs circuits for dac etc these wont be needed in these places.

[Fidelity Audio]

1) Also for the opamp we have been trying the LME49720HA (LM4562HA) and it is much better than the standard LM4562NA. More dynamic, smoother mids and a better treble. They have the character of a DOS circuit.

7) And all other good reg retailers

Brent

[bigerik]

Originally posted by rowemeister
1) Also for the opamp we have been trying the LME49720HA (LM4562HA) and it is much better than the standard LM4562NA. More dynamic, smoother mids and a better treble. They have the character of a DOS circuit.

7) And all other good reg retailers

Brent

Thanks for the clarification, Brent?
Do you still recommend doing them in the order listed?
Thanks
Erik

[Thomo]

Just a quick 'un, to say that I heard those LM4562HA's and was very surprised by the difference over the standard 4562's.

A much more pleasant and cohesive sound. Noticeable improvements in the treble and bass in particular, with more air around the instruments.

Cheers, Lee.

[SimontY]

Originally posted by Thomo
Just a quick 'un, to say that I heard those LM4562HA's and was very surprised by the difference over the standard 4562's.

A much more pleasant and cohesive sound. Noticeable improvements in the treble and bass in particular, with more air around the instruments.

Cheers, Lee.

I noticed this: BASS!

(the bass dynamics are also the main improvement you hear on certain music with the "DOS")