Marantz CD63 & CD67 mods list - Page 1011 - diyAudio
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Old 7th June 2008, 07:25 AM   #10101
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This CD63 project remains one of the most popular.
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Old 9th June 2008, 02:27 PM   #10102
RCruz is online now RCruz  Switzerland
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Quote:
Originally posted by rowemeister

The better the reg the better outcome you will get. A Raygulator type device will work a treat
Hi Brent

Can I use a LD1086 for the clock psu on the dac ?

I have only one of those and read they can be unstable with little loads... can it be an issue ?

By the way, I just installed the DAC digital +5v rayreg and it is burning beautifully.... better stereo image and stage depth.

Regards

Ricardo
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Old 9th June 2008, 08:21 PM   #10103
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The 1086 should be fine, current required here is very small.

I would'nt bypass the the Oscon.

Brent
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Old 10th June 2008, 07:47 PM   #10104
magilla is offline magilla  Belgium
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Default To separate or not?

I notice that Brent's player mod list has the DAC and Decoder each powered by a PSU, with 5V feeds for analogue and digital bits; is it best to use power the digital and analogue together, or the chip( DAC or decoder) as Brent has?

The single channel static noise vulnerability seems to have been sured by 1086s on main 5V feed and on the output opamps 12V. All three were free samples, so its a pretty good tip.
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Old 10th June 2008, 07:55 PM   #10105
RCruz is online now RCruz  Switzerland
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Default Re: To separate or not?

Quote:
Originally posted by magilla
I notice that Brent's player mod list has the DAC and Decoder each powered by a PSU, with 5V feeds for analogue and digital bits; is it best to use power the digital and analogue together, or the chip( DAC or decoder) as Brent has?
My experiments indicate that each +5v should have its own dedicated psu.

My CD 53 now has 6 TX windings working independently.

Everytime I add one more TX, a big improvement is felt.

Brents machine sumarizes all of the known best practices in this forum.

Ricardo
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Old 10th June 2008, 08:17 PM   #10106
SimontY is offline SimontY  United Kingdom
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Default Re: Re: To separate or not?

Quote:
Originally posted by RCruz
Brents machine sumarizes all of the known best practices in this forum.
Ricardo, you are the teacher's pet!

I have also found that each regulator and psu added gives rewarding improvements.

Simon
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Old 11th June 2008, 07:47 AM   #10107
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I used a 2X 9V 15VA tx for DAC and a 2X 9V 7VA tx for decoder. All 4 supplies use a seperate winding of the two transformers with seperate diodes and caps.

I used the larger tx for the dac as it uses more current than the decoder which uses very little

Brent
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Old 11th June 2008, 02:47 PM   #10108
RCruz is online now RCruz  Switzerland
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Default Re: Re: Re: To separate or not?

Quote:
Originally posted by SimontY


Ricardo, you are the teacher's pet!
I am not.

But I can recognize a good work.

Ricardo
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Old 11th June 2008, 02:52 PM   #10109
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At least i've not had to repair yours Ricardo lol

Brent
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Old 11th June 2008, 03:00 PM   #10110
SimontY is offline SimontY  United Kingdom
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Default Re: Re: Re: Re: To separate or not?

Quote:
Originally posted by RCruz

I am not.

But I can recognize a good work.

Ricardo
Just joking my man!


Quote:
Originally posted by rowemeister
At least i've not had to repair yours Ricardo lol

Brent
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