Marantz CD-7 + XO2 clock and XO Supply

[jean-paul]

Darryl told in his first post he bought a clock with a separate power supply.

 

[Extreme_Boky]

I found some pics of MARANTZ SACD player SA1 I modified last year. Unfortunately, customer wanted to pay only for Black Gates and silver ribbons. The result was very good. Sound was good as well

Nick

 

[Extreme_Boky]

Only one at the time....

 

[Extreme_Boky]

And the last one.

 

[D.A.R.R.Y.L.]

Hi All,

It is not that i am not experienced in soldering, even with SMD (i modded an athlon processor with smd tech, and it still works ;-) )
But this being a beauty of a player, i don't want to haste it.

So all considered, everybody agrees on cutting line 23 and feeding the clock to the cutted section?

Kind regards
Ramon

 

[D.A.R.R.Y.L.]

The CD-7 has an 16 bit / 18 bit switch on the back.
Probably 16 bit corresponds with 33 MHz and the 18 bit corresponds with 36 MHz.

 

[D.A.R.R.Y.L.]

I did it!!!!!

Thank you all for pitching in. I went with the option to cut line 23 and leave the old clock (33,868MHz) in its place.

I cut 23 and measured infinite resistance just to be sure.
I hooked op the + from the clock to line 23 at the intersection.

I hooked up - or ground from the clock to the rear of the pcb, near ground connection of the IC Q324. Measured if all checked out.

Then put back clock copper shielding.

Drilled the holes for both XO Supply and XO2 Clock and mounted them at the bottom coper carrier for the top PCB. There are mounted firmly.

I then connected XO2 with XO supply.

Then I ran a speakerwire as 230volt-line from powerinput directly to the XO Supply.

Screwed the player back together.

Now i started to sweat and pump adrenaline.
First hooked up the player with the switch on 20/18 bit ergo the 36MHz clock that was still intact. It powered up, spinned, and played.

Shut it down an flipped the switch back to 16bit. It powered up, spinned, and played!!!!!!!

Now it is time for bed. I will keep you al posted on the sonic results.

Thanks again guys!!!!!

 

[jean-paul]

That's good news.

Now everything still works you can interrupt the 5V supply to Q322 as its signal will interfere with the new clocks signal.

 

[tbla]

well - how is the sound with the new clock...?

 

[D.A.R.R.Y.L.]

There are only pros and no cons.

-->Wider soundstage especially with low volume;
-->More detail;
-->More air around instruments;
-->Heavy classical music doesn't get muddy anymore on complex passages.

Overal a vast improvement, even for such a high-end player.

 

[Bernhard]

I found some pics of MARANTZ SACD player SA1 I modified last year. Unfortunately, customer wanted to pay only for Black Gates and silver ribbons. The result was very good. Sound was good as well

Nick

Excuse me, but why should a few inches of wire be silver ribbons if there are tenth of inches of odd copper pcb traces after the dac chips inside the player ???