Marantz CD63 & CD67 mods list - Page 848 - diyAudio
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Old 28th November 2007, 07:24 PM   #8471
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by Stevefish69
I've just picked up an old Vanilla CD63 which i'm using as a transport only to my Beresford DAC.

Would i see any benefit in modding this unit if i'm only using the Digital output. I presume that i'd only see a benefit from playing with the Power section and damping the case as much as possible.
Hi

Major improvements can be obtained by replacing the stock +5v reg, replacing the electrolitics and resistors around +5V inputs into the servos, HF Amp and the Decoder.

I also experimented a UGE increase in transient response by replacing C815 (Digital PSU after the reg) by a very large capacitor.

After all this I also noticed a very good improvement in the detail and attack by replacing C505 by a 2200 styroflex.

Schottkys in the digital PSU give fluidity to the sound.

Note: This was only possible due to the information in this Forum.

Regards

Ricardo
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Old 28th November 2007, 07:48 PM   #8472
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by Thomo
Something like that. MBR20200 Schottky diodes (i've already got them), and Brent's S-Power regs when I can afford them, cos without a doubt they're brilliant.
Hi Lee

Talking about overkill.... Is it or in the case of diodes, do you mean the bigger the better ?

I am starting my 12v psu for the recently replaced opamps (LM4562NA).

Im using a Nuvotem 30VA 18V and I must choose between 11DQ10 or HFA04TB60PBF.

Any input will be highly appreciated.

Regards

Ricardo
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Old 28th November 2007, 08:02 PM   #8473
Thomo is offline Thomo  United Kingdom
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I'm only using those diodes as I already had them.

Your choice between those two types I doubt very much whether you will hear any difference.

Lee.
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Old 28th November 2007, 08:14 PM   #8474
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by Thomo
I have used 220uF 35v ZA on all the digital supplies for dac and decoder as they have the best ripple rejection, low impedance etc.

They sound better that anything else I've tried including Black Gate Nx etc. Great textural detail and all that.
I need to replace the stock elcaps near the opamps.

I was thinking about 470uF BGstd, but I can get the Ruby ZA cheapper.

Does the difference in sound quality justify the extra effort() ?

Regards

Ricardo
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Old 28th November 2007, 08:28 PM   #8475
RCruz is offline RCruz  Switzerland
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Just more two important questions:

Ray, I followed your indications replacing some resistors by inductors in the +5v imputs and the results are very good.

As I did not have ferrites, I did not use any.... Now I just received 20 of those and would like your comment because now I would need to do a lot of work re soldering the inductors.

I am afraid because the PCB is very weak and easily damaged

In my early experiments modding power amps, I sometimes got good results augmenting the PSU output in some 2 or 3V.

Can I expect any gain by tweaking the resistors in the raygulators to increase their output ?

Regards

Ricardo
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Old 29th November 2007, 08:40 AM   #8476
quan is online now quan  Australia
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Thumbs up marantz 63 SE mod

thanks for reply guys-
i will try rubycon ZA for op-amp coupling as they are much easier to get from down under.
Has any built the Ray super-regulator?Some pictures would be greatly appreciated- i can't build one following the circuit diagram.
I have done the raygulators but thought to try something better without costing an arm or leg.
Heaps thanks. Quan.
PS-is there much difference between ZA and ZL as ZA are not available in Oz-470uF/25V.
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Old 29th November 2007, 01:49 PM   #8477
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I have removed all the guts from my Cd63 and placed them in a wooden case.
Do I need to earth/ground the main PCB? If so where?
TIA
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Old 29th November 2007, 02:11 PM   #8478
SimontY is offline SimontY  United Kingdom
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Quote:
Originally posted by dublin78
I have removed all the guts from my Cd63 and placed them in a wooden case.
Do I need to earth/ground the main PCB? If so where?
TIA
Awesome, has it done much for your sound?

You needn't connect safety earth, it's optional. You must connect the ground of any upgraded RCA sockets to the CD player's ground of course, but that's stating the obvious!

Simon
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Old 29th November 2007, 02:17 PM   #8479
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Thanks for the quick reply.

I will start a new thread when I have finished the project.
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Old 29th November 2007, 03:17 PM   #8480
SimontY is offline SimontY  United Kingdom
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Awesome. Any time.

Simon

ps - if you have problems with the player picking up or emitting too much interference you could shield it by lining the wood with foil (copper best, aluminium will also work) and grounding that.
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