Marantz CD63 & CD67 mods list

[Malefoda]

Ok, AD8620 seems already a great choice. I try this first, and if the "famous" OPA627 dare reach my hands... then have a try (will put socket). Is it sloder (on the BDog) and plus direct ? No need for something else ? Will it work or do I need to fit something for diffrent specs ?
Another request, it seems the 63 KI has a rubber-grommet around the clock, and it does well for it. Any picture ? In my CD53 the clock is in the air, free to move as it wants... Any pic of the OEM crystal clock?

 

[disco]

I'm thinking about using this one for my new mains filter, and make a balanced power line for my equipment.

Ray.

500VA in 5kg, that's compact!
What's the consumption of your tube amp, 100W?

Wow guys, take a look at this:

http://www.tentlabs.com/ProductEntities/CDplayer/CDplayer.html

I like it .

Ray.

Nice outputs

Regards, Jaap

 

[disco]

Ok, AD8620 seems already a great choice. I try this first, and if the "famous" OPA627 dare reach my hands... then have a try (will put socket). Is it sloder (on the BDog) and plus direct ? No need for something else ? Will it work or do I need to fit something for diffrent specs ?

I think there's need for a capacitor on the Black Dog adapter. Put at least 0,1uF caps as close to the psu pins as possible.

Another request, it seems the 63 KI has a rubber-grommet around the clock, and it does well for it. Any picture ? In my CD53 the clock is in the air, free to move as it wants... Any pic of the OEM crystal clock?

If you have not done it, try soldering a wire to the XTAL and ground it on the upper plane close to it (scratch away some paint). Be careful not to heat up the XTAL too much as it can be damaged.
Afterwards apply some hot glue from a glue pistol to dampen in slightly. This has the same effect as a rubber band.
Regards, Jaap

 

[Fidelity Audio]

Wow guys, take a look at this:

http://www.tentlabs.com/ProductEntities/CDplayer/CDplayer.html

I like it .

Ray.

oooo very nice

Brent

 

[disco]

oooo very nice

Brent

According to the reviewer the price of 2.500 euro is considered a bargain with respect to the reproduction. If my eyes don't deceive me you get one Mullard E802S, two Audio Note copper caps, lots of BG, Tent clock, three PSUs, two Burr Brown 1704K DACs and the Philips CD Pro. Not bad at all if one wants to spend that money on a player.

Jaap

 

[SimontY]

I bet the sound is stunning. Probably almost as good as a modded CD63

 

[awpagan]

According to the reviewer the price of 2.500 euro is considered a bargain with respect to the reproduction. If my eyes don't deceive me you get one Mullard E802S, two Audio Note copper caps, lots of BG, Tent clock, three PSUs, two Burr Brown 1704K DACs and the Philips CD Pro. Not bad at all if one wants to spend that money on a player.

Jaap

I have thought about using a cdpro2, their are a variety of control pcb's available.
But a kit for 2500 euro with relatively little or no warranty, no case, (built your own).
A tad to much for DIY experiments.

allan

 

[disco]

I bet the sound is stunning. Probably almost as good as a modded CD63

It certainly has good materials in it...

I have thought about using a cdpro2, their are a variety of control pcb's available.
But a kit for 2500 euro with relatively little or no warranty, no case, (built your own).
A tad to much for DIY experiments.

allan

The CDM12 can be replaced by the CD Pro 2, according to this
site

 

[Fidelity Audio]

Here is a pic af a CD67 I have modded for low cost. It also has relay muting.

Brent

 

[Fidelity Audio]

It certainly has good materials in it...


The CDM12 can be replaced by the CD Pro 2, according to this
site

Nice price, mmmmm I want one though!!

Brent

 

[disco]

Here is a pic af a CD67 I have modded for low cost. It also has relay muting.

Brent

Panasonic FC , stock Elna Silmic and Cerafine but what are those bog blue ones on your PSUs?
BrownDogs with what? Still need to match the filters, I guess? Try carbon for the analogue part.
If you have some copper laying around, build an enclosure for the xtal, maybe 2x 10pF polystyrene?

Regards, Jaap

 

[disco]

Nice price, mmmmm I want one though!!

Brent

Anyone an idea what the difference might be between stock CDP12 and CDP12 'industrial'? Other grease on the moving parts? $269 buys five CD63 over here...

Jaap

 

[Fidelity Audio]

Panasonic FC , stock Elna Silmic and Cerafine but what are those bog blue ones on your PSUs?
BrownDogs with what? Still need to match the filters, I guess? Try carbon for the analogue part.
If you have some copper laying around, build an enclosure for the xtal, maybe 2x 10pF polystyrene?

Regards, Jaap

lol

The bog blue ones are infact FC now. I was messing with values and took the picture before I changed those.

The brown dogs have OPA627 OPA132 combo on. All caps are bypassed.

Schottky diodes , 5ppm crystal , damping etc etc

The unit is being sold so i'm not going to great lengths on it and it sounds a hell of a lot better than a stock KI

Brent

 

[disco]

lol

The bog blue ones are infact FC now. I was messing with values and took the picture before I changed those.

The brown dogs have OPA627 OPA132 combo on. All caps are bypassed.

Schottky diodes , 5ppm crystal , damping etc etc

The unit is being sold so i'm not going to great lengths on it and it sounds a hell of a lot better than a stock KI

Brent

Ah, commercial benefits. Making money out of us poor forummers are you?

When I modelled a 5-15mA PSU I found 470 - 1000uF after the bridge gave best results for ripple reduction. Inserting a common mode inductance of 30 - 40mH and another 470 - 1000 cap reduced the ripple to a few mV.

Jaap

 

[6h5c]

...

The unit is being sold so i'm not going to great lengths on it and it sounds a hell of a lot better than a stock KI

Brent

Hey Brent, don't forget to harvest the FET's out of the HDAM stage .

Ray.

 

[6h5c]

500VA in 5kg, that's compact!
What's the consumption of your tube amp, 100W?

Regards, Jaap

Hi Jaap,

Nah, not even per channel . In total it's about 230VA, HV + heaters.
A 500VA should be able to pull that, leaving some for my player .

Ray.

 

[disco]

Hi Jaap,

Nah, not even per channel . In total it's about 230VA, HV + heaters.
A 500VA should be able to pull that, leaving some for my player .

Ray.

That tripples my four valve DHT with 76VA (excl loss) Ray

Jaap

 

[6h5c]

I'm going to run my amp at 2x 115V center tapped. Andy posted an excellent article a while ago, when we were discussing power and earth-rods . Like this:

 

[disco]

Interesting article (dutch). Will you be diy-ing the filters and module? Without the mains ground will be loaded I guess.

Jaap

 

[Malefoda]

Hi,
where should I solder the cap ? (V+ and V-)? I have absolutely no knowledge about electronics... and on the PCB nothing to remove except the JRC ?

An externally hosted image should be here but it was not working when we last tested it.

I think there's need for a capacitor on the Black Dog adapter. Put at least 0,1uF caps as close to the psu pins as possible.

If you have not done it, try soldering a wire to the XTAL and ground it on the upper plane close to it (scratch away some paint). Be careful not to heat up the XTAL too much as it can be damaged.
Afterwards apply some hot glue from a glue pistol to dampen in slightly. This has the same effect as a rubber band.
Regards, Jaap

Also, where does the ground wire go on the chassis, is there any good point ? Any screw of the PCB/chassis mounting ?

Thanks for your patience...