Just been looking at the drawing - thanks for that.
The only difference with mine then is that the grey goes to C802 instead of U306.
I'll try changing it tonight and let you know.
BTW these are the voltages :-
KI SE
U305 14 13.8
U306 16.4 16.5
U307 33.6 16.5
U308 9.7 8.6
U309 0 0
U310 9.6 8.8
U311 0 0
U312 0 0
Will check the voltages tonight from your drawing.
Thanks matey.
Jim
The only difference with mine then is that the grey goes to C802 instead of U306.
I'll try changing it tonight and let you know.
BTW these are the voltages :-
KI SE
U305 14 13.8
U306 16.4 16.5
U307 33.6 16.5
U308 9.7 8.6
U309 0 0
U310 9.6 8.8
U311 0 0
U312 0 0
Will check the voltages tonight from your drawing.
Thanks matey.
Jim
The Gray should go to C802 it is linked to U306 via a small track.
I drew it that way so you could see how they wired it up, I could ammend the drawing and add C802
Why are there two voltage readings?
U311 U312 should measure 3.6V ac across them or -19V on each DC
Brent
I drew it that way so you could see how they wired it up, I could ammend the drawing and add C802
Why are there two voltage readings?
U311 U312 should measure 3.6V ac across them or -19V on each DC
Brent
rowemeister said:
Hi Brent,
COG is indeed a nice choice in this case. This PCB will probably give close to 100% of what's possible with this kind of output stage. If you upgrade a standard player with it straight away, you'll get shock-therapy with the major step it will make in sound.
BTW, where's the 'filter designed by Ray' imprint on the PCB?? Some credit would be nice
. I'll put the PCB on my website in return 
.Regards,
Ray
Ahha
Don't worry about any non recognition matey
I've not drafted anything up yet for the spiel to go with it but I can certainly add a link to your web site with a nice thankyou for the design of the filter section.
It's a spot on design and there was no point in changing any values on a pcb design that worked perfectly for over a year now.
I looked at changing the FETs to non 2SK170 but there is nothing that comes close so I stuck with them too.
I hope this pcb brings good audio to many.
Brent
Don't worry about any non recognition matey
I've not drafted anything up yet for the spiel to go with it but I can certainly add a link to your web site with a nice thankyou for the design of the filter section.
It's a spot on design and there was no point in changing any values on a pcb design that worked perfectly for over a year now.
I looked at changing the FETs to non 2SK170 but there is nothing that comes close so I stuck with them too.
I hope this pcb brings good audio to many.
Brent
6h5c said:
BTW, where's the 'filter designed by Ray' imprint on the PCB?? Some credit would be nice
Regards,
Ray
Don't forget Remco!
Nice work Brent. You could even make a little rectifier/smoother PCB to go with it (and maybe sell it with a toroid for the fully-populated version) and you've got an all-in-one solution for people.... for any differential voltage out DAC (though admittedly most do not require as much filtering).
I have been running with a single audio signal in on the LO RO input and it runs perfectly.
I have been thinking of making a psu for them which would also be universal for powering the clocks too
Small toroid , nice cap and a low noise reg on it.
I have been thinking of making a psu for them which would also be universal for powering the clocks too
Small toroid , nice cap and a low noise reg on it.
Glenn2 said:Don't forget Remco!
That's why I wrote 'filter'...
rowemeister said:
Yeah, I hope so too. No, no worries, this PCB could be the small push that some people need to implement such an outputstage. It indeed is a simple but effective recipe. Also works very good in a SA8400, with a modified filter of course (listening to it right now!), and this shows the quality can match that of some very high-end players!
If you have the page for the PCB cooked-up i'd be happy to include a link on my outputstage-section, just drop me a mail.
Ray
Ray - did you decide in the end that the SA7001 was as good as the SA8400?
(AlthoughI think the 8400 looks nicer personally but 7001 has a KI brother.)
How many Marantz players do you have by the way!
(AlthoughI think the 8400 looks nicer personally but 7001 has a KI brother.)
How many Marantz players do you have by the way!
Glenn2 said:
I have eight at the moment 😎. But three of them are going to be sold as soon as i'm finished modifying them (a CD63KI, CD67mkII and a CD72mkII), one of them (CD57) is at my work for the nescessary shot of Marantz during labour 😀 and one of them (also a CD57) is an ugly scrap-player I use on my home-workbench to create test signals. I'm planning to take a few pictures with all of them stacked, just for fun 😀.
I haven't even started modding the 7001, but i'm sure it will be as good as a 8400, as the PCB and the transport are identical, except for a few minor details.
Regards,
Ray
Brent
Haven't had chance to tinker with the KI yet but will let you know tomorrow night.
Two sets of voltages - first ones for KI second ones for SE. The headers slipped over to the left.
Ooops. That's how it got bu**ered in the first place I think!!
Jim
PS all voltages were measured from the U whatever across to ground.
Will measure again across the relevant pairs tomorrow, now I know what goes where!!
Haven't had chance to tinker with the KI yet but will let you know tomorrow night.
Two sets of voltages - first ones for KI second ones for SE. The headers slipped over to the left.
Ooops. That's how it got bu**ered in the first place I think!!
Jim
PS all voltages were measured from the U whatever across to ground.
Will measure again across the relevant pairs tomorrow, now I know what goes where!!
rowemeister said:
What, when, where? You mean I have to do something?
Sorry, will try to do it tomorrow.
Simon - first listen to Katie Melua in a while: enjoyable
Hi All
I want to reclock my 53 SE and already identyfied two clocks... X101 8.46MHz on the servo... XD01 16.9344 MHz on the DAC.
What is the purpose of the third clock (XF01 8MHz ?? ).
Which Clock should I replace to have more detail and pace in the music ?
Best regards
I want to reclock my 53 SE and already identyfied two clocks... X101 8.46MHz on the servo... XD01 16.9344 MHz on the DAC.
What is the purpose of the third clock (XF01 8MHz ?? ).
Which Clock should I replace to have more detail and pace in the music ?
Best regards
Hi
The 8Mhz is for the cpu and this does not require changing.
Firstly change the dac clock and then change the servo clock. Not many people have changed the servo clock but it does make a large improvement on fine details and resonance to bass.
The dac clock makes a more broadband improvement.
Brent
The 8Mhz is for the cpu and this does not require changing.
Firstly change the dac clock and then change the servo clock. Not many people have changed the servo clock but it does make a large improvement on fine details and resonance to bass.
The dac clock makes a more broadband improvement.
Brent
rowemeister said:
Hi Brent
I am actually using an external DAC (SONY DTC 670) because its sound is much more detailed and spacious.
Does any clock change would increase the 53SE decoder performance.... I believe there is no point in changing the 53 DAC clock because its not been used.
Regards
Yes it would increase the decoder performance as the internal dac supplies a 16.9Mhz clock to the decoder. But with this information I think you should clock the servo instead.
Also has the external dac been clocked?
Brent
Also has the external dac been clocked?
Brent
rowemeister said:
Hi Brent
Thank you for your info.
Can you suggest a particular solution for the Servo?
I do not have any schematics for the external dac so I did not touch it..Yet!!
Regards
RCruz said:
I'm sure if he didn't have a commercial interest vs. forum rules conflict he would recommend his own product:
http://www.audioupgrades.co.uk/clocks.shtml
Money well spent! I have two of these clocks in mine and the difference is terrific.
Simon