Marantz CD63 & CD67 mods list

[SimontY]

Originally posted by burnedfingers
Quote:

Well, my mods have added 67% to sound quality, but my sound quality meter needs calibrating.

What were those mods if I may ask?

Well, my point is..I have seen fist fights develop over the sound of capacitors and if you blindfolded the same people they couldn't tell what the better sounding cap was.

I don't put a lot of blind faith into what people think they hear in the way of changes. Has anyone run any distortion tests to see if there was an improvement?

You could be the first. What equipment do you have for measuring distortion, and what types of distortion? And what would you be looking for?

Can you measure jitter? That could be interesting WRT our clock upgrades.

Regards,
Simon

[awpagan]

Originally posted by burnedfingers
Quote:

Well, my mods have added 67% to sound quality, but my sound quality meter needs calibrating.

What were those mods if I may ask?

Well, my point is..I have seen fist fights develop over the sound of capacitors and if you blindfolded the same people they couldn't tell what the better sounding cap was.

I don't put a lot of blind faith into what people think they hear in the way of changes. Has anyone run any distortion tests to see if there was an improvement?

all relevent to how much you want to spend, how involved the interest,
and what YOU can hear.

start with remove muting and output caps then better quality opamps

simple cheap and improvement

but if you cannot hear the difference?

don't worry about it
low cost and no damage done.

allan

[Fidelity Audio]

Im not going to reply, this thread will fall on its ar*e if we do.

Sod it !

We are all trying different things to make the audio sound better. Read any artical on noisy psu rails in these players. Do psu mods remove/isolate noise . simple job done.

[Original Burnedfingers]

SimontY

Quote:

You could be the first. What equipment do you have for measuring distortion, and what types of distortion? And what would you be looking for?


It is unfortunate that I cannot ask a simple question without getting atitude in return.

I have Sound Technology distortion analyzers and I can measure IM and THD distortion. I would think if there was a viable improvement it would show up here in terms of lower distortion.

[SimontY]

Originally posted by burnedfingers
SimontY

Quote:

You could be the first. What equipment do you have for measuring distortion, and what types of distortion? And what would you be looking for?


It is unfortunate that I cannot ask a simple question without getting atitude in return.

I have Sound Technology distortion analyzers and I can measure IM and THD distortion. I would think if there was a viable improvement it would show up here in terms of lower distortion.

Ok, great. I know nothing of test equipment, but it sounds like you can do some basic measurements. If this is what you'd like to do, I might suggest particular changes, which produce substantial gains in sound quality. If you perform said changes and measure before and after you might get some interesting results. Try addon master clock with dedicated psu, op-amps, removal of output parts. I'd love to know just how much distortion comes away. If we can hear it, it must be measurable, right?

[poynton]

Originally posted by burnedfingers


Are you able to tell measured differences or are all the differences you are hearing by ear only?

Hi.

Just to add my 2p worth to this side topic............

The only equipment that counts in ANY audio measurement are your ears. After all that's what it's about - listening.

Distortion, clock jitter etc. do not count if you like what you hear.

For example, some Very Expensive High-End equipment does not measure well in the distortion department but is well received when listened to!

The point is - if you like the sound of the original equipment, don't do anything.
If you are not happy, try a mod... if the result is a change for the better, well done. If not, change back and try something else. A case in point, GREEN Lights or BLUE - I will try this later just to see.

PLEASE ... LET'S NOT GO DOWN THIS ROUTE !!!!!!!!!

STOP NOW !!!!!!!!!!!!!!

Andy

[awpagan]

Originally posted by rowemeister
Im not going to reply, this thread will fall on its ar*e if we do.

Sod it !

We are all trying different things to make the audio sound better. Read any artical on noisy psu rails in these players. Do psu mods remove/isolate noise . simple job done.

I agree 100%

allan


ps these gentlemen have given there time advise suggestions free

what you do with it is your choice

pps like my stupid suggestion with that earth

and there was something nagging me about the top plane

[6h5c]

Originally posted by rowemeister
Im not going to reply, this thread will fall on its ar*e if we do.
Sod it !

We are all trying different things to make the audio sound better. Read any artical on noisy psu rails in these players. Do psu mods remove/isolate noise . simple job done.

Originally posted by burnedfingers
SimontY

Quote:

You could be the first. What equipment do you have for measuring distortion, and what types of distortion? And what would you be looking for?

It is unfortunate that I cannot ask a simple question without getting atitude in return.

I have Sound Technology distortion analyzers and I can measure IM and THD distortion. I would think if there was a viable improvement it would show up here in terms of lower distortion.

Now, now, people, no need to get excited

Burnedfingers, that's cool! With this kind of equipment maybe we can put the finger on the exact reason for these mod's we are doing. We know that the sound changes, to the better mostly, but I don't think any of us has had the opportunity to actually measure it, simply because we don't have this equipment available (BTW: i'm dead serious here).
I'm absolutely sure that it has to do with TIM and other nasty stuff, the only question is: do you have a CD63 or CD67 at your disposal? EDIT: yes you do

Regards,

Ray.

[Original Burnedfingers]

Quote:

Now, now, people, no need to get excited

Burnedfingers, that's cool! With this kind of equipment maybe we can put the finger on the exact reason for these mod's we are doing. We know that the sound changes, to the better mostly, but I don't think any of us has had the opportunity to actually measure it, simply because we don't have this equipment available (BTW: i'm dead serious here).
I'm absolutely sure that it has to do with TIM and other nasty stuff, the only question is: do you have a CD63 or CD67 at your disposal? EDIT: yes you do

I wasn't trying to start WW3 here. I was trying to find out what mods would deliver the best gain in performance. I also thought that being good diyers there might have been some measurement
taken. Measurement in the way of before and after are important to gauge the importance of the work being done.

Gentlemen, I could have possibly contributed positively here but gauging the attitude I will back out with my tail between my legs.

[awpagan]

Originally posted by 6h5c


The mods on that site are good. I like the idea of using coax for the digital signals, but I don't want my player to look like that! Maybe if I run into very thin coax some day, I will do that mod.

Ray.

i have the Lclock in my cd850 just remembered the coax supplied and used is very thin, it was RG174
http://www.soundlabsgroup.com.au/lca..._lclock_xo.htm

allan