Suggestions for Marantz CD6003 mods?

[nad]

Hello all!


I'm looking for suggestions on components for my 3 week old Marantz CD6003.

With my NAD C515BEE I changed just about everything, I don't want to go that far this time, just looking to change the most effective components.

I've been looking at the the supply for the start, not looking into discrete regs or anything like that, just cost vs performance efficient caps, Schottkys and the sorts.

Haven't really got a limit on budget as such, although I dont want to spend a fortune on it so open to any ideas.


Maybe polypropylene caps like MKP's for the output, but what value?
Clock, which one? etc etc



Thanks.......

[nad]

Anyone?

[nad]

Nobody in this vast community willing to help??

[Thomo]

Hi Nad.

The basic rules of modding apply to this player as well as most others imo.

I modded an SA7003 and got nice improvements in detail by replacing the Cerafines decoupling the HDAM to Rubycon ZA.

And yes, replacing the two back to back Silmics with 4.7uF (or greater) MKP or MKS film caps will also give big gains. I'd measure the dc offset before these caps though, as if there's hardly any you can get away with bypassing them altogether.

I know you didn't want to add regulators etc, but re-clocking the SA7003 was of huge benefit to the sound, really improving in all areas.

Cheers, Lee.

[nad]

Originally Posted by Thomo

Hi Nad.

The basic rules of modding apply to this player as well as most others imo.

I modded an SA7003 and got nice improvements in detail by replacing the Cerafines decoupling the HDAM to Rubycon ZA.

And yes, replacing the two back to back Silmics with 4.7uF (or greater) MKP or MKS film caps will also give big gains. I'd measure the dc offset before these caps though, as if there's hardly any you can get away with bypassing them altogether.

I know you didn't want to add regulators etc, but re-clocking the SA7003 was of huge benefit to the sound, really improving in all areas.

Cheers, Lee.

Thanks Lee, much appreciated.

I have the CD6003 running with a PM7003 and the output is a bit slow and mellow, I crave attack and PRaT. Would I be better off starting with something else or clock the CD6003, replace the psu caps, swap the diodes for shottkys and new decoup/coup caps?

[Thomo]

Well, the sound of the SA7003 was very balanced. Nothing jumped out as being immediately obvious about the sound, but everything was there and for me, it was fantastic.

Have you changed any components yet? Or is your player still stock?

If you've not done anything yet, the first thing on my list would be to link out those two back-to-back Silmics on the output of each channel. If you'd rather have a cap there to prevent dc a 4.7uF mks, mkt or mkp cap will be miles better than the two standard electrolytics. This should do away with some of the muddiness of the bass and help things move along.

Check out the massive cd63/7 modding thread on here. Most of the tweaks there can be applied to your cd player too. Marantz CD63 & CD67 mods list

It'll take some reading, but you'll start to learn what works for modding cd players.

Cheers, Lee.

[nad]

Originally Posted by Thomo

Well, the sound of the SA7003 was very balanced. Nothing jumped out as being immediately obvious about the sound, but everything was there and for me, it was fantastic.

Have you changed any components yet? Or is your player still stock?

If you've not done anything yet, the first thing on my list would be to link out those two back-to-back Silmics on the output of each channel. If you'd rather have a cap there to prevent dc a 4.7uF mks, mkt or mkp cap will be miles better than the two standard electrolytics. This should do away with some of the muddiness of the bass and help things move along.

Check out the massive cd63/7 modding thread on here. Most of the tweaks there can be applied to your cd player too. Marantz CD63 & CD67 mods list

It'll take some reading, but you'll start to learn what works for modding cd players.

Cheers, Lee.

Thanks Lee,

Thinking about it, I was at Brents shop a while back when you was there and you mentioned your shop, do you have an open shop or is it online only?


Cheers,
Ant

[nad]

Originally Posted by Thomo

I know you didn't want to add regulators etc, but re-clocking the SA7003 was of huge benefit to the sound, really improving in all areas.

Cheers, Lee.

I think clocking is out of the question, the IC (CDCE913) runs at 1.9v so a 3.3v clock would be a no-no, nevermind a cheaper more common 5v affair. The IC has an internal VCXO which has been tested by many at 50pps, I know it's not ideal but it's far better than most. A £145 clock in a £200ish player just doesn't make sense to me, anyhow, I've a bucket full of ZA/FC caps and a load of hexfreds to put in so that's me busy for a few hours.

Thanks anyhow, but unless someone comes up with a 1.9v clock for a sensible price, I don't think I'll bother.

[Thomo]

Hi Ant, sorry I haven't been in touch for a while, I've been really busy lately.

Brents clocks have a 1.7v output so they'd be fine there. Also, fitting a really good clock along with the other parts you have will turn this player into something fantastic, but if they're out of your budget it's no problem. I can build you a cheap clock on strip-board if you like, email or phone me about this if you like.

Also, I wouldn't use FC caps after the regs, I always find they give a ragged, harsh sound. They're great before regs though.

Cheers, Lee.

[GaryKrant]

Originally Posted by Thomo

I modded an SA7003 and got nice improvements in detail by replacing the Cerafines decoupling the HDAM to Rubycon ZA.

And yes, replacing the two back to back Silmics with 4.7uF (or greater) MKP or MKS film caps will also give big gains. I'd measure the dc offset before these caps though, as if there's hardly any you can get away with bypassing them altogether.

Fully agree: I'm tweaking my CD6000 and I replaced the back2back output Silmics by MKP Auricaps, and reused the Silmics on the decoupling stage of the HDAMs. I used Rubycons ZA too, but for the decoupling stage of the active filter giving good results.

What I mean, summarizing, is that replacing output capacitors by quality MKPs gives good results. I had 6003 service manual some time ago but now I'm not able to find it, I'll try to get it again in order to give you more accurate advices.

Good luck.