Marantz CD63 & CD67 mods list - Page 993 - diyAudio
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Old 9th May 2008, 01:59 PM   #9921
6h5c is offline 6h5c  Netherlands
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Nice overview, peufeu.
Very clarifying to read, puts things back into perspective :-)
What kind of analyzer are you working with?

Ray
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Old 9th May 2008, 02:46 PM   #9922
RCruz is offline RCruz  Switzerland
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Default Re: Re: Really joyfull

Quote:
Originally posted by rowemeister

I'm glad you like the reg
Hi Brent

Hope your new home is according to youe expectations.

I really do like the spower...... If I could, (€€€) I would replace ALL regs by those.

Now I am collecting parts for the dedicated PSU for analog dac and digital dac.

I have been looking to your pics and see you are using 10000uF BHC Aerovox ALT22A103CB040.

Looking ate the specs, I found that ESR is a bit high (50mohm).

Can I use two Pana FC 25v 4700uF instead ? (ESR is much better at 15mohm each and I would get a much higher ripple current at 7.5A combined)

Best Regards

Ricardo
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Old 9th May 2008, 03:13 PM   #9923
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Thanks Ricardo

The BHC caps really do work well (Naim use these).

Brent
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Old 9th May 2008, 04:36 PM   #9924
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by rowemeister
The BHC caps really do work well (Naim use these).
Hi Brent

That settles it then.... I will need two BHC.

Now about the Spower... Can you please inform waht is the ic that looks like a reg ?

It is the same size but all plastic and I can not read any lettering.

I believe the trick in these regs is the speed they can deliver but I know nothing about it´s layout (secret is businesse´s soul!!)

Regards

Ricardo
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Old 9th May 2008, 04:38 PM   #9925
SimontY is offline SimontY  United Kingdom
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The big thing is a transistor. If you heatsink it, she will deliver up to about 6A of current!!
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Old 9th May 2008, 04:39 PM   #9926
RCruz is offline RCruz  Switzerland
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Awesome!!!
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Old 9th May 2008, 04:40 PM   #9927
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by gareth
Hi,
Is there a different (more solidly built) transport available for the 63/67? I have somewhere about another Philips transport which is cast aluminium or something.

Gareth

Start looking here:
http://www.pinvan.com/CDMPRO/cdfaq.html
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Old 9th May 2008, 09:45 PM   #9928
gareth is offline gareth  Wales
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Quote:
Originally posted by RCruz

Gareth

Start looking here:
http://www.pinvan.com/CDMPRO/cdfaq.html

Thanks for the link RCruz, but which of these would I be able to fit into a CD63? Would I have to modify the microcontroller or any othe r parts in the CD ?

Thanks
Gareth
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Old 10th May 2008, 12:42 PM   #9929
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by gareth



Thanks for the link RCruz, but which of these would I be able to fit into a CD63? Would I have to modify the microcontroller or any othe r parts in the CD ?
Gareth

You surely have to make major mods to the CDP.

The pro model is a top loader so you can not use the stock drawer.

As for the connections, I believe you can just plug it to the main board but not sure .....
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Old 11th May 2008, 11:34 AM   #9930
ian21 is offline ian21  England
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Default output resistance

Once again asking the forum and members for help .. the problem is this.
The left channel has sounded ' soft for a while on checking resistance at rca's found 100k on right side, from r662 i think but 34k on left. Aha i thought r661 gone , got 34k across that... changed it but no improvement. Sounds simple so far.. removed link u217 to isolate output filter.. fine 100k now at L rca. Have since checked every component i can think of and can not find the cause. I guess its painfully obvious to some but cant nail it. I suspect some parallel path to ground coz on the dmm the 34k slowly rises as if charging a cap, so c611/613 have been out to check and ok as are the bypass caps
If anyone can point me in the right direction i will be most gratefull.
Many thanks in advance.
Ian

p.s.
It's a fairly well modded 67
also get on op amp pin 6 to ground 128k R, 47k L -- pin 7 to ground 100k R, 34k L. ??
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