Here is my temporary setup. When the LED is switched off the sound possess certain degree of harshness. I noticed that with my CD-PRO it was more pronounced that with my previous player. That's why I was a bit disappointed after finishing it.
When I switched the LED on the harshness disappeared, the sound is smoother with bigger soundstage, more relaxed and maybe a bit more detailed. Some would say, more analog like.
I think that this mod brings more improvement than installation of triplets that I did befor in my DAC. Highly recommended.
I'll be buying more blue LEDs and installing them in all my other players.🙂
When I switched the LED on the harshness disappeared, the sound is smoother with bigger soundstage, more relaxed and maybe a bit more detailed. Some would say, more analog like.
I think that this mod brings more improvement than installation of triplets that I did befor in my DAC. Highly recommended.
I'll be buying more blue LEDs and installing them in all my other players.🙂
Attachments
Peter Daniel said:
Uh, hate to say it but in addition to copyright violation issues, the text in that sidebar violates the rules here regarding the posting of non-factual information.
se
Are you suggesting we should get ready for one of those long threads? How about a bit more of penance for yourself and continuing with that "dual quad litz"?
😉
How come when something is really worth noticing it doesn't get deserved attention? http://www.diyaudio.com/forums/showthread.php?s=&threadid=6337
😉
How come when something is really worth noticing it doesn't get deserved attention? http://www.diyaudio.com/forums/showthread.php?s=&threadid=6337
Pete,
This is an interesting concept. It raises a multitude of questions which I'd like to address in followup posts. Here are a few questions/requests/thoughts:
How did you go about finding the correct distance to place the LED from the CD?
Does the light from the LED reach the photodiode in the CDP?
I'd like to ask you to provide me (us) the part numbers for your blue LED and the laser photodiode in your CDP.
It would really be interesting to know the differences in read errors with the blue LED turned on and off.
Lastly, please explain where in your circuit you have the blue LED hooked up.
Do you have any comments on how to go about reproducing your experiment?
Regards,
AudioEnthusiast
This is an interesting concept. It raises a multitude of questions which I'd like to address in followup posts. Here are a few questions/requests/thoughts:
How did you go about finding the correct distance to place the LED from the CD?
Does the light from the LED reach the photodiode in the CDP?
I'd like to ask you to provide me (us) the part numbers for your blue LED and the laser photodiode in your CDP.
It would really be interesting to know the differences in read errors with the blue LED turned on and off.
Lastly, please explain where in your circuit you have the blue LED hooked up.
Do you have any comments on how to go about reproducing your experiment?
Regards,
AudioEnthusiast
Member
Joined 2002
that is a nice cd player peter. i like it what do you think the overall cost of that thing was to build NOT includeing the metal.
j'
j'
Those thoughts and questions are interesting indeed. For now I will address only one. I'm running my blue LED from battery, because I'm afraid that by connecting it to the CD player circuits I might degrade the sonics in some way.
JasonL said:
It may be nice, but to do something like that takes a lot of manhours. The cost of the parts I ordered from Netherlands was about CAD500, transformers and caps, plus some few other parts might add another 200, metal was cheap, but the hours...
Peter Daniel said:
No. Only that the rules here prohibit posting non-factual information. And that sidebar is full of it. How does non-factual information benefit anyone?
se
Peter Daniel said:
By those who aren't able to separate the factual information from the non-factual information? So that they can assume it's factual and pass it along as fact to others who aren't able to separate factual information from non-factual information?
Why do you figure one of the rules here prohibits posting non-factual information?
And by the way, the non-factual information I refer to is only in the sidebar you copied from the Stereophile review. Everything else you've posted is just fine.
se
Peter, what circuit did your use for battery opperation? I was thinking about the same for my Zen V4's but found out it's usefull as well for my CDP?
Steve Eddy said:
So if we here on a forum are not allowed to post non-factual information should a magazine like Stereophile be allowed? It can cause much more damage than this forum.
Peter Daniel said:
So, just because a handful of people read these forums, it's ok to post non-factual information? That's a rather bizarre justification isn't it?
And Stereophile is free to set their standards how they see fit. Just as this place is free to set their standards as they see fit. And unless I'm reading the rules wrong, posting non-factual information isn't considered fit by those who set the standards here.
se
LEDS's of all colors
Hi Peter,
I a sorry but I can't corroborate your findings.
See also:
http://db.audioasylum.com/cgi/m.pl?forum=tweaks&n=68249&highlight=elso+green&r=&session=
😉
Hi Peter,
I a sorry but I can't corroborate your findings.
See also:
http://db.audioasylum.com/cgi/m.pl?forum=tweaks&n=68249&highlight=elso+green&r=&session=
😉
Steve Eddy said:
Let's define the term "non-factual information", so we all know what we are talking about here.😉
By those who aren't able to separate the factual information from the non-factual inf
Can you tell us what part of the posted review was non-factual.
Is it non-factual that it was a review? I don't see anything about Scull saying what the equipment sounded like.
Is it non-factual that a blue laser or LED can cause optical noise or some other difference in how the laser reads the CD?
Why does a non tweak company like magnavox put a green LED in thier player?
Will eggs not move in a carton if you shake them hard enough?
Please clear this up as I can not tell exactly what you are specifically refering to.
Is dither non-factual?
Thank you,
H.H.
Can you tell us what part of the posted review was non-factual.
Is it non-factual that it was a review? I don't see anything about Scull saying what the equipment sounded like.
Is it non-factual that a blue laser or LED can cause optical noise or some other difference in how the laser reads the CD?
Why does a non tweak company like magnavox put a green LED in thier player?
Will eggs not move in a carton if you shake them hard enough?
Please clear this up as I can not tell exactly what you are specifically refering to.
Is dither non-factual?
Thank you,
H.H.
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