Marantz CD63 & CD67 mods list - Page 1368 - diyAudio
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Old 7th December 2009, 04:52 PM   #13671
wdoerr is offline wdoerr  United States
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The Modslist in included in post #1.

However, you'll probably need your own. I've created a hugh spreadsheet to help me sort thru the volumes of info. I cut and paste info from this thread as well as from other sorces into that file. Pictures and diagrams are alway very helpful. I've organized the info into approx. 20 separate sheets. Sheet titles include: my mods list, recommended mods by the players, voltage regulators, opamps, LM317/337, reclocking, HDAM bypassing, Muting Circuits, To buy list, and on and on.

My spreadsheet started out fuzzy. But as time goes on, it all become more clear.
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Old 7th December 2009, 05:27 PM   #13672
6h5c is offline 6h5c  Netherlands
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Nice !!!

Congratulations

Ricardo
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I disappear for a few days and look what I miss out on!!!

Congratulations Ray, she's so cute.
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Finally, congrats Ray on your new daughter. Enjoy her while you can. They grow up so fast!
Thanks guys, if any of you'd like to volunteer for one night, changing diapers, that would be great .
Not much sleep last night But hey, one look at her makes all of that go away

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Last edited by 6h5c; 7th December 2009 at 05:32 PM.
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Old 7th December 2009, 09:41 PM   #13673
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Just installed 3 regs (2 at the DAC, 1 at servo) as well as some Oscons as decouplers. Sound at the moment is pretty horrible, but I expect this is due to the lack of break-in.

I don't have a remote for my cdp, so I only have the functions on the machine itself (no repeat!). Is there a way to automate the break-in? (program function, or another trick?)

Sorry for the non-diy question.
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Old 7th December 2009, 10:56 PM   #13674
SimontY is offline SimontY  United Kingdom
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Break-in seems to be real but if the sound is horrible you will need more or better mods. A couple of regs on the decoder will help, as will regs on the servo driver chips (possibly more than anything else). A huge cap on the +10V rail smoothens the sound and improves it in every way (C813 I think). Schottky diodes on D801-D804 (output stage power supply) may also make the sound sweeter.

What is specifically wrong with the sound and what mods have you done so far?

Simon
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Old 7th December 2009, 10:59 PM   #13675
SimontY is offline SimontY  United Kingdom
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I can report that feeding QM01 from the same regs as Q105 works a treat in the player I have here. The sound opened up a little more and became calmer and more detailed too.

The negative rail on Q106 appears to be the only fussy one.
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Old 8th December 2009, 04:49 AM   #13676
navin is offline navin  India
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Quote:
Originally Posted by wdoerr View Post
The Modslist in included in post #1.
My spreadsheet started out fuzzy. But as time goes on, it all become more clear.
wow just realised that the thread is 4 years old!

also these links
Marantz CD63 modifications

acoustica.org.uk: modifying the Marantz CD63, part 1
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Old 8th December 2009, 07:55 AM   #13677
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What is specifically wrong with the sound and what mods have you done so far?

With horrible I meant that it went worse since I put in the regs and caps on the DAC. It simply got a bit more grainy and the soundstage got less clear. Took the Power for these regs from U215 (on +12V rail).

The reg on the servo seems to make the sound a bit more consistent/stable, which I listened to before changing the DAC setup. Power stolen from U238

So far I've upgraded:
Raygulators on +/- 12V lines
Raygulator on servo
Raygulators on DAC
Changed opamps to LM4562
Bypassed HDAM
Put in Oscons on CD06/05, and Simics on CD12/13 (?)
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Old 8th December 2009, 10:13 AM   #13678
SimontY is offline SimontY  United Kingdom
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Don't you mean U216 for +12V? If that's where you connected the DAC regs then I'd suggest removing that feed and instead powering the regs from U236 or U237 (+10V before Q811). By connecting digital power supplies to the output stage supply you are feeding noise onto the analogue section.

Next you'll want a couple of regs on the decoder, this will help to clean things up a bit more and it's easy to do. Then consider a reg on the HF amp (R505) just because it's so easy to do and should bring a little more clarity to the picture.

Simon
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Old 8th December 2009, 10:17 AM   #13679
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Simon,
I wanted to separate the Servo from the DAC, and ended up by the DAC and Opamps on the 12V rail. You think it's better to have Servo+DAC on on one rail u236/237/238?

Decoder and HF amp regs are the next steps...
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Old 8th December 2009, 12:00 PM   #13680
SimontY is offline SimontY  United Kingdom
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I think it's wise to have all the new 5V regs running from that one spot. Later you will want to add at least one extra transformer and power supply and run them off that instead. The gains should be quite large.

Or if you want to try a separate supply for different circuits then tap the unregulated 20V from BEFORE the 7812

Last edited by SimontY; 8th December 2009 at 12:06 PM.
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