Tweaker's Asylum

• Re: Marantz CD4000 Crystal Clock - binatang 01:05:06 05/02/02 (2)
  In Reply to: Re: Marantz CD4000 Crystal Clock posted by binatang on May 01, 2002 at 20:05:42:

  Jkeny:

  I've went thru the url you gave me. Very interesting ... especially the bit on changing electrical components in the CD4000. Do you have any recommendations on what sort of parts to use. Eg. The website recommends that we change 220pf caps near the opamp to 470pf polystyrene versions but it did not list the voltage rating we should use? Whay are the parts you used for your cd4000? Thanks
  
  

  ---

  • Re: Marantz CD4000 Crystal Clock - jkeny 03:50:10 05/02/02 (1)
    In Reply to: Re: Marantz CD4000 Crystal Clock posted by binatang on May 02, 2002 at 01:05:06:

    I used polystyrene from RS components can't remember the make - voltage for all polys is about > 100V I think?

    Elso Kwak has a schematic for a low jitter clock which will use ur existing quartz clock on the transport. He will e-mail u schematic - much cheaper than other options.

    Here are 2 URLs of interest . The first(in French) with some measurements on the tweaks - my babelfish translations are not that clear and sometimes it is confusing but I believe there are 2 mods
    - replace 47uF output Caps with 5uF bypassed with 150nF
    - take out all mute transistors on output
    (I implemented these - good results - careful the pcb tracks are delicate for desoldering & resoldering)

    The second URL - a complete discussion on CD723 mods (u will need to register at delphi forums to access)- only problem is it's in French - do you parlez?
    http://perso.wanadoo.fr/pol.bct/exemples/721-723.htm
    http://forums.delphiforums.com/n/main.asp?webtag=HAUTE_FIDELITE&nav=messages&msg=4629.139&prettyurl=/HAUTE_FIDELITE/messages?msg=4629.139

    Anyway hope this helps - this is as far as I got
    
    

    ---

    • Re: Marantz CD4000 Crystal Clock - binatang 19:35:05 05/02/02 (0)
      In Reply to: Re: Marantz CD4000 Crystal Clock posted by jkeny on May 02, 2002 at 03:50:10:

      Jkeny:

      Thanks a lot for all the help :) Very much obliged.
      BTW do you have Elso Kwak email? Or if you already have the schematic could you email it to me. Thanks

      
      
      

      ---

This post is made possible by the generous support of people like you and our sponsors:

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---