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Re: Marantz CD4000 Crystal Clock

147.252.79.224

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


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