Marantz CD63 & CD67 mods list - Page 1391 - diyAudio
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Old 17th January 2010, 01:11 PM   #13901
SimontY is offline SimontY  United Kingdom
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gy21,

I don't like to spoil a party but with those mods it's going to sound a bit thin and harsh. You'll also need a re-clock, muting transistor bypass, chassis damping and wooden feet to keep it musical - my opinion based on modding a few of them.

I would leave the HDAM and standard op-amps in - this is more musical than disabling HDAM and putting the good op-amps in. The 4562 only sound good when everything else is sorted. As a bare minimum for this I would suggest 5-10 extra voltage regulators and the chassis damping.

Just my 2p worth and I know others will strongly disagree. This is all quite system dependant so bear that in mind.

Simon
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Old 17th January 2010, 01:14 PM   #13902
SimontY is offline SimontY  United Kingdom
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You are ok to swap the Elnas around but an even better use would be putting them on the DAC's voltage rails perhaps.
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Old 17th January 2010, 06:47 PM   #13903
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Ray, what's the status of the DOS-boards? Still any in stock? :-)
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Old 17th January 2010, 08:05 PM   #13904
6h5c is offline 6h5c  Netherlands
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The first batch is completely sold out, I even sold the ones for myself

A second batch is underway, I expect it to arrive in about two weeks.

The availability can be monitored on my modest sales page: Ray's Audio Shop

Regards,

Ray
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Old 18th January 2010, 06:56 AM   #13905
gy21 is offline gy21  Netherlands
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Quote:
Originally Posted by SimontY View Post
gy21,

I don't like to spoil a party but with those mods it's going to sound a bit thin and harsh. You'll also need a re-clock, muting transistor bypass, chassis damping and wooden feet to keep it musical - my opinion based on modding a few of them.

I would leave the HDAM and standard op-amps in - this is more musical than disabling HDAM and putting the good op-amps in. The 4562 only sound good when everything else is sorted. As a bare minimum for this I would suggest 5-10 extra voltage regulators and the chassis damping.

Just my 2p worth and I know others will strongly disagree. This is all quite system dependant so bear that in mind.

Simon
I didn't mention it, but i'm also going to do chasis damping and bypass the muting transistors.

I'm looking into building lm317/337 reg's, replacing the xx12's at the power supply.
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Old 18th January 2010, 09:05 AM   #13906
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You can go up to 15V, better for the LM4562 and enough voltage drop for the regs. While you are at it do the drivers reg (do it before even!), a 7808 and a 7908 with a small elcap will do fine (re-use the standard Elna you will remove when you'll fit the Cerafine or Silmic). You must also fit a 7805 at DAC. Then the LM4562
(yep Simon, I agree, I've been used the CD43 (not even HDAM'd 63!) with clocks and regs and it was far better than my previous just LM4562ized CD53!

Ray, wish you success like Brent and Lee!
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Old 18th January 2010, 09:59 AM   #13907
SimontY is offline SimontY  United Kingdom
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Matthieu, his is a CD67 so he doesn't need to do the driver regs. As it's a CD67 it will be that bit smoother to start with, and I notice you run a Musical Fidelity amp, which is also smooth. You'll probably get a good result with the mods you've suggested in fairness.
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Old 18th January 2010, 10:12 AM   #13908
gy21 is offline gy21  Netherlands
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Quote:
Originally Posted by SimontY View Post
Matthieu, his is a CD67 so he doesn't need to do the driver regs. As it's a CD67 it will be that bit smoother to start with, and I notice you run a Musical Fidelity amp, which is also smooth. You'll probably get a good result with the mods you've suggested in fairness.
Ok thx I was indeed a bit confused on the driver reg's. This my 2nd cd67, which I use my 2nd audio room and is not used with a musical fidelity.

My first cd67se, has audioupggrades Dos, Tentlabs clock, multiple extra regulators (no lm317/337 yet), Panasonic FC caps in several places and several smaller mods.

My 2nd cd67 (mkII) I would like to mod a bit, I liked the LM4562 wihich i previously used in the cd67se and therefor I would like to use in my 2nd cd67.

I will start by building a lm317/337 (12V) raygulator, because this is something I not yet used also in my first player and this could be an improvement to that one to.
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Old 18th January 2010, 10:17 AM   #13909
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oops!
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Old 18th January 2010, 05:02 PM   #13910
RCruz is offline RCruz  Switzerland
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Hi

What could be the problem in a CD53 that results in just spinning the CD at very high speed ?

No other function works .... even the display is off.

Where should I start ?

Ricardo
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