Marantz CD63 & CD67 mods list

[avr300]

Perhaps one should buy one of these.

http://www.westonshealth.co.uk/acata...o_FLEAZAP.html

[Gooch]

Like this?

avr300

Are those Trent clock pcb's your using for the reg's?

Nice work looks cool.


Dave

[6h5c]

Look what the mailman just brought in....

Now I have to get me some parts. Anyone have some 797's to spare?
13 euro's at Farnell .

Ray.

[6h5c]

Originally posted by avr300
Like this?

Hey, nice one avr! Looks good with christmas too!

Ray.

[gy21]

Originally posted by avr300
Like this?

I was more thinking of inserting one 7805 to feed the dac

[gy21]

Originally posted by 6h5c
Look what the mailman just brought in....

Now I have to get me some parts. Anyone have some 797's to spare?
13 euro's at Farnell .

Ray.

I just ordered two AD797 samples

[Fidelity Audio]

Originally posted by gy21



I was more thinking of inserting one 7805 to feed the dac

Really you need 3 7805 mate. One for the digital supply one for the analogue supply and one for the voltage reference for the clock. Also supply the decoder from these too.

Here is a very basic way of doing it.

[SimontY]

Originally posted by gy21
I'm thinking of putting in a separate reg (7805) for the dac. Does anyone have a more detailed description of how to do this?

Hi,

You need a few things, and need to decide how far to take it. Do you want a separate reg for each of digital, analogue and clock reference? I think you do...

Basically, you need:
3x 7805
a strip of veroboard/stripboard about 5 strips wide and about 5" long
wire not too thick to be inserted through pcb holes (stranded would be the easier)
2 caps for each reg (one before, one after)
possibly some screwdown terminals to allow removal of the power input for repair/work (your choice, but I like that idea)

You need to know:
*Where to take the voltage from (I used the +20v supply from)under C803.
*What parts to remove (RD01 and RD04)
*Where to feed the new 5v rails (U200 - lifted at the supply end will feed the DAC's analogue psu pins, hole of RD04 for digital psu pins, and hole of RD01 for clock ref. pin)

This post of mine has a pic showing more or less where they go and what it might all look like: http://www.diyaudio.com/forums/showt...675#post910675

Also - you need to attach the ground of the regulator and associated caps to the ground of the player, in my case a star ground I added.

edit: or do it even more simply as Brent has shown above (fewer caps).

[gy21]

Originally posted by SimontY


Hi,

You need a few things, and need to decide how far to take it. Do you want a separate reg for each of digital, analogue and clock reference? I think you do...

Basically, you need:
3x 7805
a strip of veroboard/stripboard about 5 strips wide and about 5" long
wire not too thick to be inserted through pcb holes (stranded would be the easier)
2 caps for each reg (one before, one after)
possibly some screwdown terminals to allow removal of some the power input (your choice, but I like that idea)

You need to know:
*Where to take the voltage from (I used the +20v supply from)under C803.
*What parts to remove (RD04 and RD04)
*Where to feed the new 5v rails (U200 - lifted at the supply end will feed the DAC's analogue psu pins, hole of RD04 for digital psu pins, and hole of RD01 for clock ref. pin)

This post of mine has a pic showing more or less where they go and what it might all look like: http://www.diyaudio.com/forums/showt...675#post910675

Thanks Simonty and Rowemeister.

One question. My tentlabs clock is already on a dedicated board with a power supply (tentlabs schema), so does that mean I don't need the 7805 for clock ref anymore?

[SimontY]

Originally posted by gy21


Thanks Simonty and Rowemeister.

One question. My tentlabs clock is already on a dedicated board with a power supply (tentlabs schema), so does that mean I don't need the 7805 for clock ref anymore?

No, I believe it doesn't mean that. This is a pin on the DAC and your masterclock needs an additional psu. So you'll still need 3 to run the DAC sweetly.

Simon