External clock to CD-PRO2

[joeling39]

It lives !

Added Elso's clock to the CD-Pro. Now playing music through my backup DAC - Scott Nixon 1543 DAC

More info later (like how's the sound ? - can't tell at the moment).


Thank you Elso.

Regards,
Joe Ling
Malaysia

 

[joeling39]

Hmm, can't seem to post pictures. How is it done ?

 

[Elso Kwak]

Posting Pictures

Hmm, can't seem to post pictures. How is it done ?

Hi Joe,
The problem with the pictures here is usually they are too big. If you download Irfan View from www.irfanview.com you can choose resize/resample. 800 bits is the maximum for this forum. Then just save the file as......And upload from your computer. Irfanview is free of charge!
Hope this helps.
Glad the clock is working. I was a bit anxious after Lcaudio's post.

😎

 

[tbla]

 

[joeling39]

testing on pictures

 

[joeling39]

Let's try a bigger picture of the detail.

Note that the crystal has been destroyed while trying to pry it away from the PCB. I simpley soldered the 'clock out' from Elso's clock onto one "leg" of the crystal while the ground went to the ground of one of the capacitors on the PCB.

 

[joeling39]

Here's a general view of the whole setup.

CD Pro module on the left, Elso's clock in the middle & power supply for Elso's clock on the right.

Thanks Elso for the computer tip

 

[BrianGT]

Here's a general view of the whole setup.

CD Pro module on the left, Elso's clock in the middle & power supply for Elso's clock on the right.

Thanks Elso for the computer tip

Joe,

Can you post your schematic that you are using for your power supply for the cdpro II? I am in the process of planning out a cdpro II project, and I am not sure what to use for the power supply.

--
Brian

 

[joeling39]

Brain,

I bought my set from Robert of Ahfart audio in Singapore. He supplied the PCB & parts for the power supply as well. So, not sure whether I can give it to you. However, the schematic is nearly identical to these ones I found on the net :

 

[joeling39]

for the 5V & 9V supply

 

[tbla]

how's the sound with the new clock....?

 

[joeling39]

Give me 1 week & I should be able to make a comparision with my modified Theta Pearl CDT.

Right now it is still sitting on the test bench. Have to haul it up to the listening room.

Regards,
Joe Ling
Malaysia

 

[Josep]

clock replacement

how's the sound with the new clock....?

 

[joeling39]

Hi,

Sorry for taking so long to post my first impression. I have done some brief listening maybe about 1.5 months back. All I can say is that based on the preliminary listening, the CD-Pro sounds more "smooth" than the Theta. That is good for some music like ballad but maybe not so good for harder stuff like rock. Too early to make a conclusion.

I still feel that there is potential for the CD Pro to replace the Theta. However, I am not thinking about that at the moment as I have managed to screw up my AN 1.1 DAC shortly after my last post (the ultimate mod - nasty hum whenever I switch on my DAC ). I am unable to listen to music on the main system ever since.

On the spur of the moment, decided to order an AN 21. balanced but still waiting after 1 month+. Sigh.

Once I get back on my feet, I will again investigate the CD-Pro.

Regards,
Joe Ling

 

[joeling39]

So sorry, appears that I missed something. Compared to the stock clock, it is definitely a discernable improvement. In that sense, it is something worth trying out as the outlay is marginal🙂

Regards,
Joe Ling

 

[Josep]

CD-PRO2 external clock

Is your external clock 8 Mhz as the original ?
Is possible to use a 16 Mhz clock without more changes ? (The SAA7324 supports 8, 16 and 32 Mhz but I dont know if there is necessary changes in the configuration).

 

[joeling39]

Dear Josep,

I used the 8mhz clock as per the original crystal. I am not technically competant enough to try the other clock frequencies.

Regards,
Joe Ling

 

[devas]

I'm about to put an external clock too, anyone with experience since then ?

 

[Guido Tent]

I'm about to put an external clock too, anyone with experience since then ?

http://www.daisy-laser.nl/homeoptics/page24.html

best

 

[devas]

Thanks Guido, actually I've just bought the kit from them...
What i'm looking for is feedeback and opinion about the changes it brings about , if it's worth doing it or not.
I already put a clock (not yours sorry!) in a Cd2.2 Consonance and it was a great improvement but also simpler to implement.

Fred