Hey guys,
I have searched and can not find the specific answer to my question. Basically, I want to know what are the reasons for using blue LED's in a CDP near the disc/transport?
Is there a scientific reason for any increase sound quality, or just a matter of aesthetics?
Thanks,
Bryan
I have searched and can not find the specific answer to my question. Basically, I want to know what are the reasons for using blue LED's in a CDP near the disc/transport?
Is there a scientific reason for any increase sound quality, or just a matter of aesthetics?
Thanks,
Bryan
At least one person on this site (who shall remain anonymous) believes that it affects the error correction in such a way as to cause increase in sound quality.
Member
Joined 2002
Hey.
I think you guys keep forgetting about one very important thing. Hearing is most subjective human's sense. And the reason of listening to music - sorry... listening to our players and amplifiers is to feel good. So if you feel better (and/or you think it plays better with C37 or blue led pointed at red laser and you'r happy to spend some time dealing with it and/or spend some money) good for you!
I personally like blue leds (any leds actually) from aesthetical point of view, and large heavy metal cases on three spikes...
But me thinks that it plays best with high slew rate, DC coupled, low THD + IMD + noise, flat response, low output, high input impedance. That would be it. 🙂
Simon
ps. Note that I'm new in diy audio so my opinions may change in the future.
I think you guys keep forgetting about one very important thing. Hearing is most subjective human's sense. And the reason of listening to music - sorry... listening to our players and amplifiers is to feel good. So if you feel better (and/or you think it plays better with C37 or blue led pointed at red laser and you'r happy to spend some time dealing with it and/or spend some money) good for you!
I personally like blue leds (any leds actually) from aesthetical point of view, and large heavy metal cases on three spikes...
But me thinks that it plays best with high slew rate, DC coupled, low THD + IMD + noise, flat response, low output, high input impedance. That would be it. 🙂
Simon
ps. Note that I'm new in diy audio so my opinions may change in the future.
ghetto said:
this person should connect a counter to the error corrector counter output
If there is a difference, it is al in the jitter
cheers
Y B Blue?
The matter has been discussed here: http://www.diyaudio.com/forums/showthread.php?s=&threadid=6368&highlight=
The matter has been discussed here: http://www.diyaudio.com/forums/showthread.php?s=&threadid=6368&highlight=
Anyway, how to connect anything to the error corrector counter output? If I have the schematics of a player, how can I find it? Can it be made easily visible (by a LED or anything)?
I was just wondering if it's an effective way of knowing how good the transport is or, say, a small mechanical problem, like a slightly worn spindle motor bearing has its effect in the performance.
Or now, I'm repairing an old Onkyo (DX6570). It had a bad spindle motor, which I've replaced, most of the operation is OK now. But it has a strange problem, while it's OK with CDs, it has a distorted sound with CD-Rs. The strange thing is that it reads the TOC extremely fast and seeks and plays without problem, no skipping or anything. The lens is clean. It seems like a mechanical problem, and not a mechanical problem at the same time. If I take a look at the audio out signal it's nice with CDs and looks some kind of "stepped" with CD-Rs. The eye pattern is good. Tracking and Focus error signals are good. I don't know if counting the errors would help, but hey, maybe it would... At least it would be nice to know how much the error correction has to work (not only in this special case but in general). What do you think, would it return different error counts at different conditions (like different supports under the deck or anything)?
Or now, I'm repairing an old Onkyo (DX6570). It had a bad spindle motor, which I've replaced, most of the operation is OK now. But it has a strange problem, while it's OK with CDs, it has a distorted sound with CD-Rs. The strange thing is that it reads the TOC extremely fast and seeks and plays without problem, no skipping or anything. The lens is clean. It seems like a mechanical problem, and not a mechanical problem at the same time. If I take a look at the audio out signal it's nice with CDs and looks some kind of "stepped" with CD-Rs. The eye pattern is good. Tracking and Focus error signals are good. I don't know if counting the errors would help, but hey, maybe it would... At least it would be nice to know how much the error correction has to work (not only in this special case but in general). What do you think, would it return different error counts at different conditions (like different supports under the deck or anything)?
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