quartz displacement

guytou · 5th May 2005, 10:26 PM

hi everybody , I have a CDP YAMAHA CDX 810 and I would move the quartz from the decoder (YM3613)to the digital filter(actually a YM3433) I was thinking in tapping the xtal with his caps on the XO/XI of 3433,and therefore feed the XI entry of 3613B with XO of 3433 .
Am I right ,at your sense ? Do i have to buffer the XO from xtal ?
I use to have an old THOMSON LAD 440 and the clock from the 3433 was not bufferized, just a serie resistor and 1nf cap through
the CXD 1167Q .what' about the faisability of this mod ? thank's for your advises .

Jocko Homo · 6th May 2005, 04:58 AM

Use a separate oscillator, powered by a low-noise supply, and feed it to both of them. Neither chip is satisfactory for an oscillator. There is simply too much stuff going on inside them that will have a detrimental effect when used as a oscillator.

Jocko

guytou · 6th May 2005, 05:10 PM

thanks jocko ,in fact I moved the quartz on the filter and the difference is not huge . Do you know where i could get shemes of oscillators , i would build one .

rfbrw · 6th May 2005, 05:22 PM

Quote:

Originally posted by guytou
thanks jocko ,in fact I moved the quartz on the filter and the difference is not huge . Do you know where i could get shemes of oscillators , i would build one .

See here. http://www.diyaudio.com/forums/showt...6884#post76884

Elso Kwak · 6th May 2005, 09:20 PM

Quote:

Originally posted by rfbrw

See here. http://www.diyaudio.com/forums/showt...6884#post76884

Or here:
http://www.diyaudio.com/forums/showt...928#post199928

guytou · 6th May 2005, 10:01 PM

Thanks to everybody for the infos .At this time , this stuff is well upon my knowledge , so i will let in stand-by some months .

5th May 2005, 10:26 PM	#1
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	quartz displacement hi everybody , I have a CDP YAMAHA CDX 810 and I would move the quartz from the decoder (YM3613)to the digital filter(actually a YM3433) I was thinking in tapping the xtal with his caps on the XO/XI of 3433,and therefore feed the XI entry of 3613B with XO of 3433 . Am I right ,at your sense ? Do i have to buffer the XO from xtal ? I use to have an old THOMSON LAD 440 and the clock from the 3433 was not bufferized, just a serie resistor and 1nf cap through the CXD 1167Q .what' about the faisability of this mod ? thank's for your advises .

6th May 2005, 05:10 PM	#3
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	quartz moved thanks jocko ,in fact I moved the quartz on the filter and the difference is not huge . Do you know where i could get shemes of oscillators , i would build one .

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6th May 2005, 04:58 AM	#2
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	Use a separate oscillator, powered by a low-noise supply, and feed it to both of them. Neither chip is satisfactory for an oscillator. There is simply too much stuff going on inside them that will have a detrimental effect when used as a oscillator. Jocko

6th May 2005, 10:01 PM	#6
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	Thanks to everybody for the infos .At this time , this stuff is well upon my knowledge , so i will let in stand-by some months .