Marantz CD63 & CD67 mods list - Page 1364 - diyAudio
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Old 4th December 2009, 02:14 PM   #13631
Glenn2 is offline Glenn2  United Kingdom
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Is the tip replaceable?
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Old 4th December 2009, 02:43 PM   #13632
SimontY is offline SimontY  United Kingdom
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Of course, but remember to use lots of flux to get a good flow.
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Old 4th December 2009, 02:50 PM   #13633
Glenn2 is offline Glenn2  United Kingdom
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And wipe it on a sponge afterwards.
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Old 4th December 2009, 02:56 PM   #13634
SimontY is offline SimontY  United Kingdom
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...aaaaand moving back on topic.

What have people's experiences been in removing the last traces of hard/harsh sound sound from the CD63? The question assumes you've achieved that, so most will not be able to answer this.

I find Steve's player still just has a slight bit of grit to the upper midrange and treble. It has 13 extra regulators wired directly to their consumers, upgraded caps in most places, HDAM/muting/caps bypass and HA tin hat op-amps, C1 clock on DAC, a ~80VA transformer supplying DAC/decoder/servo analogue pins, the usual chassis damping.

All that remains are low noise regs, servo re-clock and maybe a better output stage. Thoughts anyone?

Simon

ps - when I used a CD63KI as my main player it didn't have this problem, but I seem to recall the output stage helped to cure it.

Last edited by SimontY; 4th December 2009 at 02:59 PM.
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Old 4th December 2009, 03:08 PM   #13635
SimontY is offline SimontY  United Kingdom
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I know there are a few other little tweeks that could lift things.

Examples: C505 - the HF signal goes through a ceramic cap. That should be a silver mica or at least polystyrene I'd guess.

The 10k resistors in the output filter could be matched or 0.1% items used. I might try that on my current test machine. The polyester filter caps could be changed for polystyrene, polypropylene, teflon or silver mica.

I am going to try output coupling transformers too, and I know changing the naff old sockets lifts some dirt off the sound.

There are always more power supplies to add too.
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Old 4th December 2009, 03:09 PM   #13636
SimontY is offline SimontY  United Kingdom
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And to help clean things a bit more there's always the coax runs, ground re-routing to a new star and shielding of the uprocessor chip.
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Old 4th December 2009, 03:21 PM   #13637
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Quote:
What have people's experiences been in removing the last traces of hard/harsh sound sound from the CD63?
Dropping it from a height of at least 1.2m

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Old 4th December 2009, 03:30 PM   #13638
Glenn2 is offline Glenn2  United Kingdom
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I was going to say Simon that your usual trick of letting the smoke out ought to do it.
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Old 4th December 2009, 03:41 PM   #13639
SimontY is offline SimontY  United Kingdom
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Ahh, cheers guys, yep I know there are better players around but I kinda like messing with these!
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Old 4th December 2009, 05:17 PM   #13640
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Isn't the price/sound ratio very good with the right mods? Go to shop and check what you have for 150€... nothing at all! For that I have a twin clock, regs everywhere, DOS... not that bad for me. And spare parts for cheap.
The fact there is always better is true, if you d'ont mind the price

A happy CD-43 owner.
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