Clock upgrades always pay off. When used as a transport only the clock will certainly have a great impact on sound. Jitter via SPDIF will be lower and you'll hear that immediately.
Think about Guido Tent's module or Elso Kwak's solution. Cheaper and probably better. I strongly advise to use a separate transformer and power supply. That way you won't have ground loops and other nasty things.
Think about Guido Tent's module or Elso Kwak's solution. Cheaper and probably better. I strongly advise to use a separate transformer and power supply. That way you won't have ground loops and other nasty things.
Sony Problem
Hi TNT,
May I ask how old your Sony is? I never heard of this model.
Older Sony players have the problem that if you replace the 45.1584 MHz clock the 16.9344MHz clock derived from it is not improved. The 45 MHz clock goes to the DAC .
From there goes a divided down clock to a 16.9344 MHz crystal and a CMOS oscillator to get a synchronised 16.9344 MHz clock going to the digital signal processor. The CMOS oscillator is not low jitter.....so much of the improvement is lost in the proces. I hope this clarifies the matter.
Newer Sony's f.a. CDPXA30ES/ SCD-1/777ES don't have this problem as the 45.1584MHz oscillator is the sole clock.
TNT said:
Hi TNT,
May I ask how old your Sony is? I never heard of this model.
Older Sony players have the problem that if you replace the 45.1584 MHz clock the 16.9344MHz clock derived from it is not improved. The 45 MHz clock goes to the DAC .
From there goes a divided down clock to a 16.9344 MHz crystal and a CMOS oscillator to get a synchronised 16.9344 MHz clock going to the digital signal processor. The CMOS oscillator is not low jitter.....so much of the improvement is lost in the proces. I hope this clarifies the matter.
Newer Sony's f.a. CDPXA30ES/ SCD-1/777ES don't have this problem as the 45.1584MHz oscillator is the sole clock.
CDP-XA50ES
Hi TNT,
Helas the situation in your Sony is as I pictured in post # 5.
But you can replace the 16.9344 MHz oscillator and use the Sony only as a transport with a separate DAC component.
TNT said:OK! I was a bit lazy. The full model name is:
CDP-XA50ES
Thanks for the consern Elso !
Best regards /
edit: I don't know where i got the SA from
Hi TNT,
Helas the situation in your Sony is as I pictured in post # 5.
But you can replace the 16.9344 MHz oscillator and use the Sony only as a transport with a separate DAC component.
Sh*t!
I ordered a 45 Mhz osc. I dont think lcaudio mention this kind of mod. Do You have any reference to a 16.9 Mhz clock upgrade to improve the sp/dif output ?
Scematics, board layouts etc.
I am surprised that the CDPXA50ES is not the same as CDPXA30ES. They seem to be designed at the same time !
BR/
I ordered a 45 Mhz osc. I dont think lcaudio mention this kind of mod. Do You have any reference to a 16.9 Mhz clock upgrade to improve the sp/dif output ?
Scematics, board layouts etc.
I am surprised that the CDPXA50ES is not the same as CDPXA30ES. They seem to be designed at the same time !
BR/
guido tent,etc
this is where google is your friend
Go for it!
evaguido@iae.nl - is offereed as an E-mail
this is where google is your friend
Go for it!
evaguido@iae.nl - is offereed as an E-mail
Re: guido tent,etc
Thank you, colwaiting.
I have found this site http://www.triodedick.com/cd_klok.htm about Guido's reclock, but it is in German.
I will try to use the Email you provided.
colwaiting said:
Thank you, colwaiting.
I have found this site http://www.triodedick.com/cd_klok.htm about Guido's reclock, but it is in German.
I will try to use the Email you provided.
Dick's site is in dutch, not german.
http://www.diyhifisupply.com/accessories/cd_xo_clock.html
Kwak clock schematic can be sent by email by the author Elso Kwak. You can mail him via diyaudio's mail function.
http://www.diyhifisupply.com/accessories/cd_xo_clock.html
Kwak clock schematic can be sent by email by the author Elso Kwak. You can mail him via diyaudio's mail function.
16.9344 MHz Clock
I simply install the KWAK-CLOCK in the player and connect the output of the clock to the digital signal processor. You can not use the crystal from the player. You need a new 16.9344 MHz crystal.
The schematic of the KWAK-CLOCK is available by email. Just send me a email by hitting the email button below this post and I will reply with the schematic attached.
Hi TNT,TNT said:
I simply install the KWAK-CLOCK in the player and connect the output of the clock to the digital signal processor. You can not use the crystal from the player. You need a new 16.9344 MHz crystal.
The schematic of the KWAK-CLOCK is available by email. Just send me a email by hitting the email button below this post and I will reply with the schematic attached.
Re: 16.9344 MHz Clock
Hello Elso Kwak,
Why can not use the crystal from the player?
Elso Kwak said:
Hi TNT,
I simply install the KWAK-CLOCK in the player and connect the output of the clock to the digital signal processor. You can not use the crystal from the player. You need a new 16.9344 MHz crystal.
The schematic of the KWAK-CLOCK is available by email. Just send me a email by hitting the email button below this post and I will reply with the schematic attached.
Hello Elso Kwak,
Why can not use the crystal from the player?
I need to revive this threat as I to have the exact Sony XA50ES.
I have replaced the 45 MHz Clock with and XO3.
I know that there is another Clock in the unit, however I didn't know that this clock actually has so much overall impact.
If I do understand it right, using the player has a whole would imply changing both clocks?
I cannot say how much the improvement of my modification is due to the XO3 as at the same time I replaced over 60 parts in the player on 3 boards.
It doesn't sound like a typical Sony any more, the improvement is day and night, however if the consensus is that only the change of both clocks will bring the jitter reduction, then I will be on for it.
Any comments?
Thanks,
Oliver
I have replaced the 45 MHz Clock with and XO3.
I know that there is another Clock in the unit, however I didn't know that this clock actually has so much overall impact.
If I do understand it right, using the player has a whole would imply changing both clocks?
I cannot say how much the improvement of my modification is due to the XO3 as at the same time I replaced over 60 parts in the player on 3 boards.
It doesn't sound like a typical Sony any more, the improvement is day and night, however if the consensus is that only the change of both clocks will bring the jitter reduction, then I will be on for it.
Any comments?
Thanks,
Oliver
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.