Marantz CD63 & CD67 mods list - Page 1753 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 23rd September 2011, 11:47 PM   #17521
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Ray I've been testing properly at home for the last 36 hours with all the changes and I have to say it is superb. I do believe it is very linear sounding now (without the ccs inparticular) and the other transistors have brought realism and that analogue sound.

Now it is offering better bass control with a small amount of extra depth. Mid range is slightly cleaner and the very uber levels of upper treble detail I used to get has improved that little bit extra too.

Ok I've had issues with this Dos but for me once some parts are changed this is the best dos pcb to date.

Ray I hope you get the same improvements I found by changing those few things. Also it is a good thing you mentioned the transistor pin out as I forget not everyone knows these things ;-)

Brent

Last edited by Fidelity Audio; 23rd September 2011 at 11:54 PM.
  Reply With Quote
Old 24th September 2011, 12:16 AM   #17522
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
I must say this! I have another marantz sa-7s1 in and of course it is a very nice cdp. It sounds superb but compared to the uber 63 it sounded very much a cheaper player. Which of course pleased me. Lee from red hill audio heard the diff and could not believe the difference especially as he really likes 7s1 (I do too)

Brent
  Reply With Quote
Old 24th September 2011, 12:44 AM   #17523
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
I also seem able to run the cdp at higher volumes which would also suggest lower distortion. That would also back up why I have these gains. Right on time for my new amp in two weeks for bi-amping

Brent
  Reply With Quote
Old 24th September 2011, 07:22 AM   #17524
6h5c is offline 6h5c  Netherlands
One Seriously Addicted to Audio and Electronics
diyAudio Member
 
6h5c's Avatar
 
Join Date: Apr 2004
Location: Heerhugowaard
That's beautiful! So this is with the 1k8 resistor, right? Any chance you'd try a LED CCS there, which I described earlier?

I'm still wondering why the BC560's sound so different from the 2SA's then. I had a look at the datasheet and can't find any obvious differences.

Martin, maybe you have an idea?

I guess that SA-7 needs a DOS . I'm planning to get a SA-11S2 in the future.

Ray
__________________
Gonna buy my little girl a pink soldering-iron
The new DOS-CFP board is out!

Last edited by 6h5c; 24th September 2011 at 07:24 AM.
  Reply With Quote
Old 24th September 2011, 07:33 AM   #17525
6h5c is offline 6h5c  Netherlands
One Seriously Addicted to Audio and Electronics
diyAudio Member
 
6h5c's Avatar
 
Join Date: Apr 2004
Location: Heerhugowaard
Quote:
Originally Posted by gareth View Post
In respect of the clock design Ray I have also discovered another couple of designs. One is a 4007 Complimentary MOS design, another uses a 74LSxxx Schmitt device and there are variations on these too.

Cheers
Gareth
Hi Gareth,

Ok, just post them and we'll have a look. I saw the 4007 circuit before, can't recall who it was that mailed it to me. Both use CMOS gates and I don't think they are specifically low-jitter, because it looks a lot like the inverter-oscillator that is originally used in the player. But they can be built dirt-cheap, so you can give them a try and see what it sound like.

Ray
__________________
Gonna buy my little girl a pink soldering-iron
The new DOS-CFP board is out!
  Reply With Quote
Old 24th September 2011, 12:38 PM   #17526
Chivvyp is offline Chivvyp  United Kingdom
diyAudio Member
 
Join Date: Apr 2006
Location: London
Quote:
Originally Posted by Chivvyp View Post
Got the old chip out with only 2 damaged pads. Should be able to connect those point to point if I'm careful. Just waiting for a chip to arrive from Hong Kong now, couldn't find them any closer.
New chips arrived and I soldered it in and did the point-to-point corrections. Switched it on and no output on RO. I know I said before that the issue was with LO but maybe I got it wrong before, anyway now not sure whether the issue was with the chip or not

Investigated a bit further and found a dodgy connection between pin 26 and +ve of CD16, lifted trace. Re-soldered and it's working again.

Didn't really check all the pins on the dac that when I first had the problem as I assumed if it was a power issue the whole channel would go not just half.

So, in hindsight maybe I didn't need to replace the chip but it was good practice to do and I'm chuffed that I managed it to do it.

Still think it's odd that an issue with one of the main power caps on the chip only causes an issue on half a channel, but it's worth knowing for the future.

And the players working again.

Regards

Pete

PS in the meantime I picked up a faulty 67 mkII from ebay, haven't recieved it yet but looks to be clean with just a knackered laser. Longer term it probably makes sense to think about transferring the parts to that, hopefully I'm experienced enough now not to raise so many tracks this time (I know I said that last time I did it)
  Reply With Quote
Old 24th September 2011, 12:42 PM   #17527
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Ray.

Yes I'm using the 1k8 rc55y resistor. I've not tried the led way but I can imagine it sounds better than a transistor. The difference between the transistors audibly is quite staggering.

Brent

Last edited by Fidelity Audio; 24th September 2011 at 12:45 PM.
  Reply With Quote
Old 24th September 2011, 06:37 PM   #17528
UV101 is offline UV101  England
diyAudio Member
 
UV101's Avatar
 
Join Date: Dec 2008
Location: Oxford
I feel a bit like I'm cheating here guys! I've got all the parts available but once again due to the invaluable info published by the jolly nice folks on this thread, I'm able to short cut directly to the improved version! Anyway a big thanks all who have contributed here.

Not long now and I'll have something running to compare to the audio aero!!! Now with a spot of luck, that will be very interesting!!!
__________________
When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk
JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"
  Reply With Quote
Old 26th September 2011, 09:46 AM   #17529
UV101 is offline UV101  England
diyAudio Member
 
UV101's Avatar
 
Join Date: Dec 2008
Location: Oxford
Couple of minor set backs!!!

1st, the 10K RC55Y's were missing from the Farnell parcel :-( FOC replacements now on the way YAY!!! and I seem to have mislaid???? one of my 220uF Black Gates grrrr. How on earth does that happen. Needless to say, 3 BG's on the PSU are of little use to me.....

Now I'm just working out what I should do with respect to replacement.
__________________
When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk
JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"
  Reply With Quote
Old 26th September 2011, 09:59 AM   #17530
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
lol

Going well then! Do you not have a BG fitted elsewhere you could pinch?

Brent
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 09:23 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2