Marantz CD63 & CD67 mods list

[SimontY]

Originally posted by philpoole

I thought it could be quite cool/quirky to have some 1920's technology in my CD player No valves though

Tried keeping the back panel fixed last night. It is much trickier. Will try filing down the lugs on the sides. I guess its not too important, if the cables to the phonos get damaged, I can easily rewire them and do it properly when everything else is done.

Nice one! Did the extra weight make it spin quieter, read any discs better or sound better? Or anything negative?

Hmm, I can't work out why it's so hard to slot my back panel in when it's connected to the pcb, but I intend to attack those lugs.

[awpagan]

Originally posted by philpoole


That's one other mod I didn't mention.
My clamp is full of blutac, topped off with a 1921 old penny. Its about 1.5 inches diameter, copper (although even then it was probably an alloy of some sort) and rather heavy.
I thought it could be quite cool/quirky to have some 1920's technology in my CD player No valves though

Tried keeping the back panel fixed last night. It is much trickier. Will try filing down the lugs on the sides. I guess its not too important, if the cables to the phonos get damaged, I can easily rewire them and do it properly when everything else is done.

I haven't seen a penny for over ***years
family came out when i was 5.

how much does it weight?

there are upgrades on the cd-pro2 with heavier platers

allan

[Fidelity Audio]

Originally posted by philpoole


That's one other mod I didn't mention.
My clamp is full of blutac, topped off with a 1921 old penny. Its about 1.5 inches diameter, copper (although even then it was probably an alloy of some sort) and rather heavy.
I thought it could be quite cool/quirky to have some 1920's technology in my CD player No valves though

Tried keeping the back panel fixed last night. It is much trickier. Will try filing down the lugs on the sides. I guess its not too important, if the cables to the phonos get damaged, I can easily rewire them and do it properly when everything else is done.

Undo the screws to the optical , coax and remote slightly. You wont have to file lugs off then.

Originally posted by awpagan



U201 is the earth point for the whole pcb, then to chassis earth.

put your meter across neutral and earth and see if you read anything
maybe mV's (warning only if tech)

i've seen 5vac

allan

Yes and no. When screwed in the rear panel is connected to pcb gnd via the rca , coax and remote connectors .

But I do have a wire running from this point to IEC earth

Brent

[awpagan]

Originally posted by rowemeister



But I do have a wire running from "this point to IEC earth"

Brent

"this point to IEC earth" (star) earth point

allan

[Fidelity Audio]

Originally posted by awpagan



"this point to IEC earth" (star) earth point

allan

Yes U201 (mini star point) to IEC earth.

The 63 has 3 small star earth points
U201 for Audio rails
One for 5V reg
one for 12V regs

[awpagan]

Originally posted by rowemeister


Yes U201 (mini star point) to IEC earth.

The 63 has 3 small star earth points
U201 for Audio rails
One for 5V reg
one for 12V regs

Post 802 i went through all the grd plane links

does the cd63 have any of these?

allan

[Fidelity Audio]

Originally posted by awpagan



Post 802 i went through all the grd plane links

does the cd63 have any of these?

allan

Yes it does, there is not much difference between the two players

Brent

[philpoole]

Nice one! Did the extra weight make it spin quieter, read any discs better or sound better? Or anything negative?

Hmm, I can't work out why it's so hard to slot my back panel in when it's connected to the pcb, but I intend to attack those lugs.

Good question. I thought it made good sense to do, so thought it was worth a punt. It definitely doesn't degrade anything. I used to have some problems accessing CDRs, I admit I'll have to try that again. I did the mod maybe a couple of months ago and have only really listened to originals.

I still have problems with the back panel, but its not a complete nightmare. It is tolerable (ish). Its definitely not as easy as removing it.

I haven't seen a penny for over ***years
family came out when i was 5.

how much does it weight?

there are upgrades on the cd-pro2 with heavier platers

allan

I'll see if I can get some photos at some point. Its an old penny, I don't know when they went out of circulation (I guess when decimalisation occured, bit before my time)
Off the top of my head (if I'd known this would of caused interest, I would have measured it) its about 30-35 mm diameter and must be a millimetre or so thick. It is heavy. I'll weigh one at some point. It is wider than a £2 coin (probably not much help for allan ther) and probably the same weight (it is thinner).

I have a tin of old coins and was thinking of a weight to use. I was thinking of an old foreign coin with a hole in the middle (lots of scandinavian and spanish coins are/were like that, amongst others) then I spotted a british coin that was older than the lot. Nostalgia took precedence in that decision. I think anything like a £2 coin would be similar.

Anyway, steered the thread through other hifi and now coin collection. I'm bad for off thread stuff. Sorry.


I need to show some photos at some point of the work done....

[awpagan]

Originally posted by rowemeister


Yes it does, there is not much difference between the two players

Brent

U208 dac earth
U169 decoder
U268 5v
U235 psu
U221 audio
U136 headphone

U225, U227 earth links psu to audio

I should have taken notes, can go over it again.

I removed all links to top plane run separate earths including grd plane from U235 and U208.

allan

[Fidelity Audio]

Originally posted by philpoole


Good question. I thought it made good sense to do, so thought it was worth a punt. It definitely doesn't degrade anything. I used to have some problems accessing CDRs, I admit I'll have to try that again. I did the mod maybe a couple of months ago and have only really listened to originals.

I still have problems with the back panel, but its not a complete nightmare. It is tolerable (ish). Its definitely not as easy as removing it.



I'll see if I can get some photos at some point. Its an old penny, I don't know when they went out of circulation (I guess when decimalisation occured, bit before my time)
Off the top of my head (if I'd known this would of caused interest, I would have measured it) its about 30-35 mm diameter and must be a millimetre or so thick. It is heavy. I'll weigh one at some point. It is wider than a £2 coin (probably not much help for allan ther) and probably the same weight (it is thinner).

I have a tin of old coins and was thinking of a weight to use. I was thinking of an old foreign coin with a hole in the middle (lots of scandinavian and spanish coins are/were like that, amongst others) then I spotted a british coin that was older than the lot. Nostalgia took precedence in that decision. I think anything like a £2 coin would be similar.

Anyway, steered the thread through other hifi and now coin collection. I'm bad for off thread stuff. Sorry.


I need to show some photos at some point of the work done....

The £2 coin is the same size as the 1 euro coin

Brent