Marantz CD63 & CD67 mods list - Page 1830 - diyAudio
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Old 13th July 2012, 12:10 AM   #18291
UV101 is offline UV101  England
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You need a scope mate!!!!
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Old 13th July 2012, 04:44 AM   #18292
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Thanks Ben & Ian.

yep, PSU caps, output filter, and opamps upgraded. (BP627 on adaptors.. another product of reading earlier in the thread). U271 &272 removed already.

So if I wire direct from before U214 and U218 to the RCA do I need any resistors or will it be ok without?

Also, what is an acceptable DC offset?
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Old 13th July 2012, 05:44 AM   #18293
bousie is offline bousie  Australia
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I'm sure I also read earlier in the thread that better to leave the hdams connected until after the clock upgrade?
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Old 13th July 2012, 07:08 AM   #18294
UV101 is offline UV101  England
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Nope, once you've done local caps, opamps and massive smoothers in place of c813&4 (22'000uF) you cam bypass the hdams by removing u210 & 216 and linking dac side straight to out. You'll have no more than a few milivolts on the output which is fine.
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Old 13th July 2012, 08:07 AM   #18295
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Yep, can't say about the components you've used 'cos I've not tried them, but massive smoothers + op-amps + filter caps were enough for me to get a better sound without HDAMs. Based on my own upgrade path I can recommend to go for servo PSU next and then clocks.
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Old 13th July 2012, 02:32 PM   #18296
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Hi

I have an update on the 63

2 months I decided to get a new cd player as mine got an hairline crack in the pcb after messing about with it and I could not be bothered to rebuild all the work I had previously done as it would have taken months. I tested a range of cd players from Naim, Marantz, dCs etc etc right up to the £10K range. All of which I had upgraded and non gave better detail, imaging, bass than the 63 and certainly less analogue sounding. I took on board what had been done to these players and where it could be pushed for the better sound and unfortunately most designs fell short.

In came a Marantz SA-7S1 I had previously upgraded for more work. After this work I was amazed at the sound it was producing. It was pretty much there on par with my 63. So the search started and I investigated and in the end bought a SA-11S2. I bought this player as I prefer the looks of it! oh and it has the same parts as the 7S1 apart from the transformer is a little smaller but this has no impact on the sound to be honest.

It arrived last week and after a 15 minute listening session I started to strip it down. The player is quite simply stunning with upgrades (no clocks fitted yet as I have the 67.7376Mhz oscillators on order) - Marantz SA-11S2 upgrades

It was a sad day stripping out the 63 but have just about got over it now.

Brent
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Old 13th July 2012, 02:48 PM   #18297
RCruz is offline RCruz  Switzerland
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You mean you decided to strip YOUR 63 über machine ????
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Old 13th July 2012, 02:54 PM   #18298
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Hi

Yes I certainly did

I do now have something that is even more uber. I couldn't live with the standard player

Brent
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Old 13th July 2012, 02:55 PM   #18299
RCruz is offline RCruz  Switzerland
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Pics ????
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Old 13th July 2012, 03:22 PM   #18300
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I have a few not to good images. You can't see all of the work that has been done. There is a lot under the mech on the servo board.

The largest capacitor is a Mundorf AG 25V 47000uF before the servo 5v reg measuring 52 x 35 They don't look big in the pics as the player itself is fairly chunky.

Click the image to open in full size.

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Brent
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