Marantz CD63 & CD67 mods list - Page 891 - 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 15th January 2008, 08:00 PM   #8901
diyAudio Member
 
Join Date: Jul 2003
Location: Bath, UK
Quote:
Put one or two ~10uF 250VAC lighting capacitors across live - neutral.
These can make thing worse..!:

http://www.acoustica.org.uk/other/filter.html - scroll down to 'Don't try this at home.' Not picking on you Simon - just pointing out that these things are incredibly context-dependant.

Quote:
You could also throw some Y-rated caps across L-N and L-E.
Not more than 4.7nF please - any more risks serious shock from casework if there's any problem in your earth installation.
  Reply With Quote
Old 15th January 2008, 09:14 PM   #8902
SimontY is offline SimontY  United Kingdom
diyAudio Member
 
SimontY's Avatar
 
Join Date: May 2003
Location: Sheffield, North England
Send a message via MSN to SimontY
Quote:
Originally posted by martin clark

These can make thing worse..!:
Sure, I'd better add that adding capicatance worked for me, in 3 houses, with varying systems. I didn't measure anything or study the technical side, nor do I know why it can work or in which contexts it may not.

Actually, I thought I'd not hear any difference with my current cheap bookshelf speakers, so I didn't even plug in my filter till recently. I was pleasantly surprised when it had the same effect again!

Simon
  Reply With Quote
Old 15th January 2008, 09:27 PM   #8903
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
I've fitted Ray's CD63 things in the main:

Quote:
- Place varistor S20K250 directly on mains pins of IEC socket or on mains terminals on PCB.
- Insert common-mode filter (Farnell 353-2331). Remove U242/243/245/246 and insert filter instead. Place two class X or Y capacitors 4,7n/250Vac across mains before and after filter.
My main is really bad, should be rock solid 238V like my former flat in town, now it's dancing from 215 to 220 with many noises ( I can tell when the washing machine is on... ).

I trust Ray for his good adivces, as my palyer sounds very good, but any backdraw of the filter?
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  Reply With Quote
Old 15th January 2008, 09:31 PM   #8904
SimontY is offline SimontY  United Kingdom
diyAudio Member
 
SimontY's Avatar
 
Join Date: May 2003
Location: Sheffield, North England
Send a message via MSN to SimontY
Quote:
Originally posted by Malefoda
I've fitted Ray's CD63 things in the main:

My main is really bad, should be rock solid 238V like my former flat in town, now it's dancing from 215 to 220 with many noises ( I can tell when the washing machine is on... ).

I trust Ray for his good adivces, as my palyer sounds very good, but any backdraw of the filter?
It probably won't be helping the sound, nor will it be ruining it.

Sadly the fluctuations can't be helped short of complaining to the electricity supplier (good luck!) or buying a mains regeneration gizmo (expensive!)...

Unless some of it is caused by faulty or inadequate wiring in your house, which seems unlikely.
  Reply With Quote
Old 15th January 2008, 10:31 PM   #8905
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Good filters will have various capacitors fitted with decent clamping components. On LN LE NE with resistors to aid discharge.

Brent
  Reply With Quote
Old 16th January 2008, 05:37 PM   #8906
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Hi Guys

I have finsihed my CD63 project (for now).

Thanks for your help.

See this thread: http://www.diyaudio.com/forums/showt...88#post1402288

Apologies for bastardising a perfectly good unit and for being too lazy to improve the output and DAC stages.
  Reply With Quote
Old 16th January 2008, 06:27 PM   #8907
diyAudio Member
 
Join Date: Jul 2005
Location: italy
Default a decisive tweaking

Hello!
There is someone who want to try THIS?

For a simulation:HERE
at last, this is the Ray's page
The tweak is good for both series: 57/67 and 63.
There are only little differences in the output analog stage of both series, and the tweak is great for both.
I try this, and other, in this 3D of my forum
Thanks to Ray, Mauro, Loesch, and Tnt Audio
Ciao
Riccardo
  Reply With Quote
Old 16th January 2008, 07:48 PM   #8908
RCruz is offline RCruz  Switzerland
diyAudio Member
 
RCruz's Avatar
 
Join Date: Sep 2006
Location: Wallis
Blog Entries: 1
Default Re: a decisive tweaking

Quote:
Originally posted by dublin78
Hi Guys

I have finsihed my CD63 project (for now).

Thanks for your help.

See this thread: http://www.diyaudio.com/forums/showt...88#post1402288
Your work is an inspiration for me.

Congratulations.

Quote:
Originally posted by riccardo
Hello!
There is someone who want to try THIS?

Riccardo

Thank you for this tweak.

Ricardo
__________________
RC
  Reply With Quote
Old 16th January 2008, 08:34 PM   #8909
diyAudio Member
 
Join Date: Jul 2005
Location: italy
I hope youžll give us your feedback about this tweak.
That is great, imho.
Anyway, don't forget that this idea it isn't mine, but of Mauro Penasa
  Reply With Quote
Old 16th January 2008, 08:58 PM   #8910
RCruz is offline RCruz  Switzerland
diyAudio Member
 
RCruz's Avatar
 
Join Date: Sep 2006
Location: Wallis
Blog Entries: 1
Quote:
Originally posted by riccardo
I hope youžll give us your feedback about this tweak.
That is great, imho.
Anyway, don't forget that this idea it isn't mine, but of Mauro Penasa
I will...
  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 10:10 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