Marantz CD63 & CD67 mods list

[seroxatmad]

@ Disco

So would you say the KI version wasted the money on a round transformer? Did it actually add anything to the sound quality? i.e less vibration? Better regulation? Less noise out of its secondaries?

John

P.S That Simon blokes got me thinking about upgrading my CD63SE...

P.P.S - How can anyone not like these sexy beauties...keep them on show like I did.

http://www.rapidonline.com/productin...moduleno=72687

John

[Thomo]

Originally posted by disco


Hi Lee,
The work involved in making -let's say- ten prints is quite demanding (for me that is), mostly because of the drilling with 0,8mm. If we want a small quantity manufactured they would probably cost no more than £ 8 each. Problem is what to do with the remaining samples

Ahh, fair enough. I think I'll wait for Brent to stock some then.

Originally posted by disco

There's life besides the toroid. These trannies are great fun when soldered on a PCB, the smallest is 6VA and does a double 0-12V. Size: 3x4x5cm.

I must admit, that I have used two non-toroidal's in my player and haven't found any problems so far. I did use a Block tx, and it got so hot that you couldn't touch the thing. It melted the adhesive on the mounting brackets and fell-off. This created a large crack, some sparks, a blown fuse and a bad smell

Lee.

[SimontY]

Originally posted by seroxatmad
would you say the KI version wasted the money on a round transformer? Did it actually add anything to the sound quality? i.e less vibration? Better regulation? Less noise out of its secondaries?

I'm glad I've whetted your appetite for CD63 modding, John!

IIRC, Brent directly compared the KI's toroid to one of the other models' transformers. He was surprised at the large gains in sound quality.

I think if all other factors were equal (materials, capacities/headroom etc.) the toroid might not have been superior. However, it was chosen as a quality part, and the cheaper E/I core ones as a cost-saving part.

Don't get hung up about it though, you can add your own transformers - like you were saying. A few of us have done this and I can tell you the gains are astonishing. The bass weight you lose from cutting out the HDAM comes back in force... but this time it's tight and tuneful!

Simon

[SimontY]

Originally posted by Thomo
I did use a Block tx, and it got so hot that you couldn't touch the thing. It melted the adhesive on the mounting brackets and fell-off. This created a large crack, some sparks, a blown fuse and a bad smell

Oh that is soooo me, awesome!

[Mags]

Hi.

Here's a couple of pic's of my new toy. Still a bit to do as most things are held down with Blu-Tac and I'm going to sort out the wiring.

Cheers,
Mags.

[Mags]

And another.

[SimontY]

Originally posted by Mags
And another.

Oh my word, Invisus-central!

And how's it sounding Mr Mags?

[Thomo]

Originally posted by Mags
And another.

Very, very nice! I bet that thing sounds awesome.

I hope you got discount for quantity on those Invisus(es)

Lee.

[Mags]

Originally posted by SimontY


Oh my word, Invisus-central!

And how's it sounding Mr Mags?

Hi Simon.

Yep there's 9 invisus regs in there, I managed to get them very cheap though

It's sounding very very nice but a bit dry and over clinical, it's still burning in at the moment though. I'm not to sure the Zapfilter is the way to go yet so I'll probably try one of Ray's discrete output stages later on.

Glenn, what filter did you end up using before the zapfilter? Also what sort of offset do you get from the zapfilter? I had over 200mv on the left channel before I installed 1k resistors over the original 100r's in the current mirrors. Here's a pic of were to add the new resistors, the ones circled in yellow.

Cheers,
Mags.

[SimontY]

Shame it's sounding dry

I wonder what's causing that effect. I made a conscious effort to choose some components to avoid the possibility - Cerafine caps next to discrete stage and Kiwame carbon resistors on discrete stage.

I know this could be seen as colouration, so please don't flame me part-haters!

My sound is far from dry. What clock or clocks are you using?