External clock but no sound improvement :(

[Bill Fuss]

OOH, they are right, missed that entirely. You already have 1541A in the player, why fool around with another board.

Im sure there are better PSs, I use a Wenzel Associates PS scheme.

[SoNic_real_one]

Originally Posted by noyan

I have already one 0.5PPM TCXO 11.2896mhz. Can i cancel the existing 11.2896mhz crystal oscillator in my Marantz CD80 and use this new clock circuit instead?

Sure, that would be the only way to go. But SAA7220 will add it's own jitter to the mix, and that is way higher than you think. Also, 0.5PPM dosn't necessarily mean that it is a low jitter oscillator (especially on low-frequency).
You are better off replacing those 5534 OpAmps with something better (there are several single OpAmps that are WAY better).

[ThorstenL]

Hi,

Originally Posted by SoNic_real_one

Sure, that would be the only way to go. But SAA7220 will add it's own jitter to the mix, and that is way higher than you think.

Yup. Ideally you remove the SAA7220 and convert to Non-Os.

IIRC, it is with SAA7220 removed link:

pin1 - pin 18
pin2 - pin 16
pin3 - pin 15

Even better, place a 74AC174 reclocker (and I2S attenuators per ec-designs as well as DEM reclocking per ec-designs) on a little plugin PCB to replace the SAA7220.

In this case you can drive XSYS with the 11.2896MHz clock as well as the reclocker & DEM reclocking.

If you remove the SAA7220 you need to drive XSYS with the clock and add the soft mute (pin 23) in suitable polarity to the analog muting.

I agree, in the analog stage upgrade the Op-Amp's or just replace with a nice tube stage.

As said, you can have a look at what I did on a Marantz CD-80 at Enjoy the Music.com - High End Audiophile Audio Equipment and Music Reviews. The Absolute Sound, Superior Audio, hi-fi+ and Review Magazine in the DIY-Magazine.

Ciao T

[QSerraTico_Tico]

Originally Posted by ThorstenL

Hi,



.........http://www.enjoythemusic.com/
Ciao T

Funny link does not work here....

[noyan]

Originally Posted by SoNic_real_one

Sure, that would be the only way to go. But SAA7220 will add it's own jitter to the mix, and that is way higher than you think. Also, 0.5PPM dosn't necessarily mean that it is a low jitter oscillator (especially on low-frequency).
You are better off replacing those 5534 OpAmps with something better (there are several single OpAmps that are WAY better).

Thank you for your help and schematic. I will do it tomorrow. I have already made the nos mod and opamp mod by replacing ne5534s with opa627. After clock mod i wonder how it will sound.
Thanks again!

[ThorstenL]

Hi,

Originally Posted by QSerraTico_Tico

Funny link does not work here....

Works fine here?

Try this directly for the article:

Modifying A Marantz CD-80 CD \Player A blow by blow account of taking a venerable CD player and giving it a new lease of life. Article By Thorsten Loesch

Ciao T

[QSerraTico_Tico]

Originally Posted by ThorstenL

Hi,



Works fine here?

Try this directly for the article:

Modifying A Marantz CD-80 CD \Player A blow by blow account of taking a venerable CD player and giving it a new lease of life. Article By Thorsten Loesch

Ciao T

I dunno what it is but I cannot reach anything from enjoythemusic site....
I have enabled cookies for that site also but it doesn't work