Marantz CD63 & CD67 mods list - Page 398 - 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 9th October 2006, 08:11 PM   #3971
disco is offline disco  Netherlands
diyAudio Member
 
disco's Avatar
 
Join Date: Apr 2006
Location: Holland
Brent,
Would similar be possible with less components: two 230-24V trannies opposite, two bipolars between 24V tabs with common to ground.
Jaap
Click the image to open in full size.
__________________
jaap
  Reply With Quote
Old 9th October 2006, 11:41 PM   #3972
diyAudio Member
 
Join Date: Apr 2006
Location: Liverpool, England.
Kinda off topic but the cd 63 benefits from a nice clean ac supply, a nice as you can provide makes a difference.

This is what i call a monster overkill filter, just lobbed it together out of spare bits, see how it sounds. Four 240 to 110 volt trannies, 2 belling lee massive potted rf filters, one for the cd63 and the other for the amp. Trannies mounted on rubber bushes. Didnt think it made that much diffrence for the size and weight (@ 40 kgs). Im still a little reserved on mains filters and leads. You need a balanced feed, good connetcions and a good earth. You have to be aware how power factor correction works and vectors, ie, leading and laging of voltage and current.

The mains cables are home made, 4mm sq silver plated, woven and screened from plug end only, polished and treated MK heavy plugs. Have a seperate run of silver plated 4mm cable screended and seperate earth to consumer unit, now that does make a difference, the player sounds way better anytime of day. Obviously i have iec on rear of the 63ki, also doing same to the amp next and fitting gold or silver plated iec throughout.

Dennis
  Reply With Quote
Old 10th October 2006, 01:18 AM   #3973
jksmurf is offline jksmurf  Hong Kong
diyAudio Member
 
Join Date: Oct 2006
Quote:
Originally posted by SimontY
It may be important to add power supply decoupling right under the pins (of the socket - use a socket so you can compare op-amps easily). I use Panasonic FC 33uF/50v and they work well. These go from + to earth and - to earth. I think + and - are pins 4 and 8 on the op-amps. Simon
Thanks Simon, (please pardon my ignorance) presumably "decoupling is what was meant by "Using a set of 4# 3.6kOhm resistors.... on the underside of the board, you will have to solder these four small 3.6K-ohm resistors--one from pin 4 to pin 1 and another from pin 4 to pin 7 on EACH of the OPA2604's (take them out of the sockets first, if you're smart!)" which I gleaned from the sites I mention above?

I will have to get my wife to check the datasheet for the correct +/- pins on the LM4562, but Ray wrote 4 and 8 too. It was funny, I was searching for these last night and she looked over my shoulder and said LM, yeah and waffled on about something or other related to who made them and how easy they were to get, so I'm relieved at least she knows ...

Quote:
Originally posted by SimontY
Or did you mean the order to do mods generally?
mods generally. Thanks you very much for your list. Now I just have to look at rays service manual and point out where everything goes....

Quote:
6 - Use add-on clock (Superclock etc) to reclock DAC / replace crystal.
There seems to be a plethora of clocks... Kwak 7 (DIY), Tent XO, LCClock XO, Superclock ... What's the easiest install / good value assuming my wife can make the Kwak?

Quote:
... carry out all ... and not consider the CD63ki a very high end music machine.
Mine's a 67SE, presumably all 10 still apply?

k.
  Reply With Quote
Old 10th October 2006, 06:36 AM   #3974
Robfow is offline Robfow  Singapore
diyAudio Member
 
Join Date: Aug 2006
Hi Guys, I will have some spare time in the next couple of weeks. I am thinking of finally replacing the opamps in my CD63. I have read through the pages here but am still a little lost. I might have missed out some information somewhere. I have some OPA124 to use also, I've read that this can be used after the DAC?

a) If I were to use opa627, I need 2 of these to replace each 2114?

b) If I use the LM4562 then it is just a direct replacement for the 2114?

Thank you in advance
  Reply With Quote
Old 10th October 2006, 07:25 AM   #3975
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by disco


What are those caps doing in your lunchbox Brent? Vitamin E?

Butteh, without the surge part, would it be beneficial to put two 30uF PIO caps between L&N and N&E for the middle part, or are the capacitance values scientifically calculated? The iron is hot...
Regards, Jaap
I used all those 8uF caps as I had them laying about. I have been bying Russ Andrews mains products and have been ripping them apart. The dearer the purifiers get the larger the capacitance get + the quality of caps get better.

Brent
  Reply With Quote
Old 10th October 2006, 07:29 AM   #3976
Zombie is offline Zombie  Sweden
diyAudio Member
 
Join Date: Feb 2003
Location: At home
Just can't emphasise enough that perfect matching of the 10k and 27k resistors afte the DAC is necessary to reap full benefits of what is done in the analogue circuit. What's even better, it might be for free!

Cheap alternative: locate other 10/27k resistors on the board (headphone amp), desolder, match within 0.1% (or better) and solder back those that didn't match in the other locations.

Expensive alternative: buy a lot of 1% 10k/27k resistors, or even better, match them in the shop, or buy the right amount of resistors with 0.1% tolerance. The better the match, the better the result!

After you've matched, THEN you start can talking opamps, caps, shottkys, clock mods, separate regulators, etc etc
(IMHO better opamps just let you hear all the crap that comes out of the DAC much better)
  Reply With Quote
Old 10th October 2006, 07:32 AM   #3977
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by ImSparticus
Kinda off topic but the cd 63 benefits from a nice clean ac supply, a nice as you can provide makes a difference.

This is what i call a monster overkill filter, just lobbed it together out of spare bits, see how it sounds. Four 240 to 110 volt trannies, 2 belling lee massive potted rf filters, one for the cd63 and the other for the amp. Trannies mounted on rubber bushes. Didnt think it made that much diffrence for the size and weight (@ 40 kgs). Im still a little reserved on mains filters and leads. You need a balanced feed, good connetcions and a good earth. You have to be aware how power factor correction works and vectors, ie, leading and laging of voltage and current.

The mains cables are home made, 4mm sq silver plated, woven and screened from plug end only, polished and treated MK heavy plugs. Have a seperate run of silver plated 4mm cable screended and seperate earth to consumer unit, now that does make a difference, the player sounds way better anytime of day. Obviously i have iec on rear of the 63ki, also doing same to the amp next and fitting gold or silver plated iec throughout.

Dennis

Mains products DO make a difference, even review mags agree these days. But the gains are down to how bad you mains actually is.
One of the worst culprits for ruining your mains noise is crappy extension leads! changing these for quality items makes a big difference to the sound, cleaning your plug pins also makes a difference.
It is actually quite worrying how much mains noise effects the sound.Here in the UK we have very good quality mains so I hate to think what its like in other countries where the supply is less stable.

I could rant on all day LOL but I won't

Brent
  Reply With Quote
Old 10th October 2006, 07:33 AM   #3978
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by Zombie
Just can't emphasise enough that perfect matching of the 10k and 27k resistors afte the DAC is necessary to reap full benefits of what is done in the analogue circuit. What's even better, it might be for free!

Cheap alternative: locate other 10/27k resistors on the board (headphone amp), desolder, match within 0.1% (or better) and solder back those that didn't match in the other locations.

Expensive alternative: buy a lot of 1% 10k/27k resistors, or even better, match them in the shop, or buy the right amount of resistors with 0.1% tolerance. The better the match, the better the result!

After you've matched, THEN you start can talking opamps, caps, shottkys, clock mods, separate regulators, etc etc
(IMHO better opamps just let you hear all the crap that comes out of the DAC much better)
I fitted 0.1% resistors around the op amps and gained a little more detail.

Brent
  Reply With Quote
Old 10th October 2006, 07:59 AM   #3979
avr300 is offline avr300  Denmark
diyAudio Member
 
avr300's Avatar
 
Join Date: Sep 2005
Location: DK
Quote:
Originally posted by Zombie

Expensive alternative: buy a lot of 1% 10k/27k resistors, or even better, match them in the shop, or buy the right amount of resistors with 0.1% tolerance. The better the match, the better the result!

I fitted 5% carbon selected down to 0.05% with i Fluke DMM. But it takes quite a bit of resistors
  Reply With Quote
Old 10th October 2006, 08:03 AM   #3980
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by avr300


I fitted 5% carbon selected down to 0.05% with i Fluke DMM. But it takes quite a bit of resistors

LOL

I priced it up and decided to just order the 0.1% as you never know how many 5% or 10% resistors to order. If you have them in stock then its worth it

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 01:42 AM.


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