Marantz CD63 & CD67 mods list - Page 1964 - diyAudio
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Old 3rd July 2013, 08:16 AM   #19631
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by higlander View Post
Totally agreed with you Brent. But for CDP as the current drawn is very small the lost in dynamics should be neglectable. Normally I will not fit IEC line filters to power amplifier but instead as you said I normally insert a ferrite ring to the incoming power cable.
I did experiment with line filters and noticed a huge dynamic loss in my cdp.
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Old 3rd July 2013, 09:26 AM   #19632
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Agree

Passive filters are the only real solution

regards
Brent
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Old 3rd July 2013, 06:29 PM   #19633
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Got my hands on these 68nF capacitors. Does anyone know what kind of caps they are? Looks like silver stacked film or something like that.

Are they good to use for decoupling in the player?
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Old 3rd July 2013, 08:43 PM   #19634
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Default emi filters

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Originally Posted by Fidelity Audio View Post
Agree

Passive filters are the only real solution

regards
Brent
did an a/b test;
with and without much better without .

regards alan
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Old 4th July 2013, 07:45 AM   #19635
bish789 is offline bish789  United Kingdom
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Default Damping

Does this look like a good damping material?
It comes in at around 17.00 delivered, but looks big enough to do 2 units.
Damping Sheet HD - Damping Sheets - Automotive
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Old 4th July 2013, 08:53 AM   #19636
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Quote:
Originally Posted by bish789 View Post
Does this look like a good damping material?
It comes in at around 17.00 delivered, but looks big enough to do 2 units.
Damping Sheet HD - Damping Sheets - Automotive
I used something like this on all my modding projects:
CAR VAN VEHICLE SOUND DEADENING PROOFING PADS SHEETS 10 | eBay

They look similar to what you have mentioned and one box of 10 sheets is more than sufficient for two CD63s.

PS: It seems the hyperlink with eBay does not work. Try search eBay using the above title instead.

Last edited by higlander; 4th July 2013 at 09:16 AM.
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Old 4th July 2013, 09:23 AM   #19637
bish789 is offline bish789  United Kingdom
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Know the ones you mean.
On another note, I have ordered a flea kit from Ray.
I have a CD63 and a CD67 to mod.
Which would be the best to do and put the effort in?
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Old 4th July 2013, 09:37 AM   #19638
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Originally Posted by bish789 View Post
Know the ones you mean.
On another note, I have ordered a flea kit from Ray.
I have a CD63 and a CD67 to mod.
Which would be the best to do and put the effort in?
I have no experience with CD67 but according to the circuit diagram, CD67 has a better servo circuitry design. CD67 only needs one clock freq. for the servo and the DAC while CD63 needs two different freq. If you have Ray's Flea with 16.xx MHz then you can clock the servo and the DAC at the same time.
BTW I think CD67 has more room than CD63 that may make modding work easier
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Old 4th July 2013, 09:44 AM   #19639
bish789 is offline bish789  United Kingdom
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CD67 it is then.
I've also just ordered a new set of servo ic's as well for the 67, so fits in quite nicely.
Caps ordering is next on the list. So many, but I'm going to do the main ones (imho) first.
Think I may have had ESD problems before, solved now with wrist straps, mats, etc. so hopefully make for a safer installation.
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Old 4th July 2013, 01:27 PM   #19640
marce is offline marce  United Kingdom
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The only problem with line filters is they harm dynamics due to the increased impedance of the mains. Your amp will suffer the most.
Any support for this from measurements, as I find it rather doubtful, the main source of current fro your amp are the PSU Caps, again if this were so, filters on digital equipment would be a total disaster...
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