Marantz CD63 & CD67 mods list

[RCruz]

Originally posted by jimh0612
Hi guys.

C1 master clock now installed and very impressed, Brent.


470u/16v BG Std from Thomo settling in nicely, 4 on opamps, 1 each on Decoder ana/dig and 2 on DAC dig at CD05 and CD06.

Hi Jim

Where did you connect the C1 ?

I itended to place it on U196 but it is covered by a big cap on CD05.

Your 470 BG must create the same issue.

Can you post some pictures ?

Regards

Ricardo

[jimh0612]

Hi Ricardo

The C1 was connected at U196 - I bent the output pin into an L shape and then soldered on top of the link at the end.
When I installed the cap there was just enough room, as I remember.
I think I did the clock before the cap so I had plenty of room to work - so you could just remove the cap temporarily.
Will try to get pics as soon as I get chance but not had time to do any modding for a while, I'm afraid - young family, work etc....
Cheers

Jim

[RCruz]

Originally posted by jimh0612
Hi Ricardo

The C1 was connected at U196 - I bent the output pin into an L shape and then soldered on top of the link at the end.
When I installed the cap there was just enough room, as I remember.
I think I did the clock before the cap so I had plenty of room to work - so you could just remove the cap temporarily.
Will try to get pics as soon as I get chance but not had time to do any modding for a while, I'm afraid - young family, work etc....
Cheers

Thank you Jim

Do you have a reg replacing RD01 ?

Ricardo

[6h5c]

Originally posted by Thomo
Mongs.
===========
Is there anything wrong with not using dc blocking on the output of my discrete? (apart from frying any amps without blocking on their inputs).

I would rather just have dc blocking on my preamp, then I can use my nice caps there and make everything sound better!

Lee.

Oh, and has anyone seen my multimeter?

Hi Lee,

No, nothing wrong in theory. One blocking cap in the signal path is enough. You have to be VERY careful though, not to make accidental shorts when you plug the RCA's in. With this large DC voltage on the outputs, the output transistor will blow . And it will give a loud 'bang' as the empty input cap of your preamp will load instantly. Apart from the fact that you can blow any visiting amps . I would not recommend it.

Ray

[jimh0612]

Originally posted by RCruz

Thank you Jim

Do you have a reg replacing RD01 ?

Ricardo

SuperRayreg ( with VBE)

Cheers

Jim

[RCruz]

Originally posted by jimh0612

SuperRayreg ( with VBE)

Hi Jim

Did you remove CD04 ?

Ricardo

[jimh0612]

Originally posted by RCruz

Hi Jim

Did you remove CD04 ?

Ricardo

Hi Ricardo

Yes, I did the mods as per Ray's list, so removed CD04 and CD07, placing the 470u/16v BG STD's at CD05 and CD06 respectively. This was because the latter are both nearer to the chips.

DAC ana were 220u/16v BG FK removed from an earlier mod to my PM66KI. They now reside at CD15/CD16, having removed CD12, CD13. Although CD12/13 are slightly closer, the holes are too close together for the FK's.

Hope this helps.

Regards

Jim

[RCruz]

Originally posted by jimh0612



Hi Ricardo

Yes, I did the mods as per Ray's list, so removed CD04 and CD07, placing the 470u/16v BG STD's at CD05 and CD06 respectively. This was because the latter are both nearer to the chips.

Hope this helps.

Hi Jim

Thank you. This info helped me choose the best setup.

I will keep CD05, loose CD04 and place the C1 on U196...

Regards

Ricardo

[jimh0612]

Hi Ricardo

You are welcome.

Will you be giving the C1 its own reg?

When I get chance I will be doing this. At the moment it's running from the stock 5v taken from the output cap, which is far from ideal.

I am also going to build a divide by two circuit for the servo reclocking, much as I would like to use another C1 or one of Brent's dividers.

Good luck and will be interested to hear your thoughts on the improvements from the clock. When I did the mods, I did the clock and the BG's at the same time, so I don't know what came from which.

Regards

Jim

[Malefoda]

Originally posted by Malefoda
"CD53e Black Signature" (e for enhanced)

Well even more black than before: Vibrapod feet and... Black Gates
So now my DAC analog is full Black Gated, like when changed the RJH around opamps it sounds a bit harsh right now and stuff is cold... let these cans settle down and we'll see =)

Before:


After:



Well well, that's all for now, I wanna say it's finnished but like always I'll be goin' on in some months Still a separate 5V and 12V supply in mind... and loads of Sercal Regs...
Bye for now! Ricardo give us feed back with your next chinese wonder

Matthieu