Marantz CD63 & CD67 mods list

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#2,761
Gooch said:
Hi Everyone

So I took apart the CDM12 cleaned everything all the old grease the gears ect.
Well it still doesn’t work :boggled: Will a CDM 12.4 work as a replacement? I know where to get one of them.

Regards

Dave
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Hello Dave,

Unfortunate cleaning didn't help.

Did you already clean the contacts of J103 connector?
You can take off the top moving part by carefully bending the sides with a small screwdriver.
I use compressed air (3-4 bar) to move the metal fingers which seem to loose tension after 10 years and many removals of the cable. Afterwards I clean with a cottonswap and alcohol. Fixed every problem I encountered with respect to skipping.

I've red VAM1201 can replace the 12.1

Regards, Jaap
 
#2,762
I did clean the cable with a cotton swap and alcohol as for J103 I did check it the connection is good I put the transport into a stock CD63 I even swapped cables that didn't work. I found a local Marantz service center maybe they can help.


Regards
Dave
 
#2,763
Gooch said:
I did clean the cable with a cotton swap and alcohol as for J103 I did check it the connection is good I put the transport into a stock CD63 I even swapped cables that didn't work. I found a local Marantz service center maybe they can help.

Regards
Dave
Click to expand...


Well, if exchanging a good transport in to your troubled player did not work there is no need for buying a new transport. :bullseye:
 
#2,766
There is a CDM12.4 on e-bay for 33 USD looks a little different then the CDM12 don't know if that will work also haven't found a older player out there that uses the CDM12 yet I will keep looking. If anyone knows where to get one let me know

Thanks Dave
 
#2,768
awpagan said:
...
"maintaining the through-print-connections after making a central ground"
Marantz used the top plane as central ground, Large area might help dissapate current pulses.
Still has to find ground somewhere!

allan
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You hint at current pulses originating from motors?

Thought Maranz had put up a ground plane to collect as much HF as possible to inject into the audio in a successful attempt to smoothen the sound. 😀

awpagan said:
hi guys
time for dump question

has the SM dac for these got a variable output?
eg volume control from the remote

if so
what is the remote's control ID so i can use my programable remote.

allan

ps headphones driven straight off rca's not bad but need to turn down volume
may reconfig buffer for lower impedance 250 Ohm's 😀
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The SM5872 features a 128-step linear attenuator (wish I could desolder it), remote controlled in the 63.

Probably the guide acompanying your remote shows a list of brands. Or is this the Central Problem?

Perhaps the coil for the DigOut can be of use for your headphone. Make a stereo autoformer out of it 😀 :xeye: 😎


Aaahgh, really dig this blues album by BB King, especially the duet with Willie Nelson. Hnghhn!
 
#2,769
fat lady

😀
 

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#2,779
disco said:


You hint at current pulses originating from motors?

Thought Maranz had put up a ground plane to collect as much HF as possible to inject into the audio in a successful attempt to smoothen the sound. 😀



The SM5872 features a 128-step linear attenuator (wish I could desolder it), remote controlled in the 63.

Probably the guide acompanying your remote shows a list of brands. Or is this the Central Problem?

Perhaps the coil for the DigOut can be of use for your headphone. Make a stereo autoformer out of it 😀 :xeye: 😎


Aaahgh, really dig this blues album by BB King, especially the duet with Willie Nelson. Hnghhn!
Click to expand...


hi Jaap
more so caps(power supply) and digital noise.

A lot of audio people said the standard Marantz sounded good?
for the market it is selling too?

As for the remote
bought cd67 secoundhand, no remote or books.

Didn't realise the dac had volume control so the remote was irrelevent, standard philips compatable i already had.

allan

ps things we learn after😀
 
#2,780
CD63 Crystal Replacement

pantera6 said:


May be useful for those of you who don't intend to get a dedicated clock, but want to take the stock setup as far as it could go

champi
Click to expand...


SimontY said:


Stock setup? lol. Not really stock is it? 😉

I'd be interested to hear your findings.

Simon
Click to expand...

Haha... Very true Simon 😉 😀

So... I finally got stuck in and replaced the stock clock crystal with the 5PPM one I ordered. To my amazement, it actually worked once I swapped crystals, as the last time I swapped the crystals, I got a whole lot of unintelligible characters on the display so I swapped the original crystal back. (Later on, and thanks to Brent, it turned out to be a weak 5V supply on the microprocessor pin – unrelated to the crystal).

So these very subjective perceptions only relate to swapping the standard CD63 crystal (~50 PPM??) with a high stability crystal (5PPM). I custom ordered mine from here http://www.rakon.com/models/crystal-search

The first thing that I noticed was the 5PPM crystal did not change the character of the sound… it only made it better. For instance, I could here more texture in the lower mids and voices sounded more “natural”. But something was a miss.:xeye: For some reason, the bass was shallower and the treble was not as extended as before. Puzzled, I tried thinking back to what else I had done to the stock crystal, and then it dawned on me… I had grounded the outer can. Also, the new 5PPM crystal didn’t have the rubber damping ring like the old Marantz one did, so I pulled the player apart again and grounded the new crystal’s outer metal sleeve and wrapped it tightly with blu-tac. :cannotbe:

Wow… what a difference!! :bigeyes: I don’t know if it was the damping or the grounding that did it, but the base and treble extension returned in spades!! It sounds even more neutral now, less Hi-Fi. If I hadn’t changed the crystal, I would never have known what was missing, as the player sounded great before…but you have to do it to see what you’re missing!! Now the frequency extremes are arguably greater and the mids are sooo natural. Really good rhythm and timing… and did I mention the neutrality J I could only imagine what a dedicated clock would do… which is now on my list (along with the servo clock mod).

What really got me is the difference grounding the crystal and damping it made. Doing these two things made a greater difference than swapping the standard one with the 5PPM crystal. :cheerful:

So there you have it. To sum up, replacing the stock Marantz crystal with a high-stability crystal (5PPM) that is also grounded and properly damped really does take this player up another notch . I had also implemented the Acoustica clock hack and had a dedicated regulator feeding the stock crystal, so these mods did help the overall sound. Wonder how much more a dedicated clock would do??

Next on the mod list (being performed this long weekend)… Ray’s excellent transistor output stage that will replace my LM6172 opamps and HDAM! :up: Will let you know how it goes if anyone's interested.

Have a great (mod-ful) weekend guys! :cd:

Champi
 
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