|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
49.128.62.113
In Reply to: RE: Help- Digital vs Analog (long) posted by HiFiOd on September 03, 2015 at 08:27:25
Yes, it is also my experience that even the most expensive audiophile digital players will reduce all the music to a little window, and tonality, bandwidth, texture, dynamic range suffer in comparisons to vinyl playback. OTOH, music that is reproduced from those black discs consistently produces a window that is larger and more vivid, with more effortless musical flow.
Yet, it doesn't have to be that way.
My suggestion.
Go back to basics.
1. Remove all other digital devices except your sony scd-777es from your system first.
Make sure they are all unplugged and removed physically from your system.
2. Set your scd-777es digital filter settings to Standard.
Setting it to the optional setting will have some detrimental effect on its power supply, thereby degrading overall sound quality (it even affects sacd playback)
3. Switch the digital output to OFF
4. Tune the lasers
Load a Japanese pressing cd disc, place the stabilizer over the disc, close the tray and then power off. Then power up again. After the player has read TOC and commencing playing the disc, stop it and remove the disc. Close the tray and switch off the player.
(A blue spec'd disc will give you even better results)
4. Power up your player again now to play your desired test disc.
Power up, let the player show no disc and settle.
Open the tray, load your desired test disc, and place stabilizer over the disc.
Close the tray by pressing the open/close button on the player' stop panel.
Do not use remote from this moment onwards.
Let the player read TOC disc and settle.
Use a finger from each hand, pressing the skip forward button and the play button in quick succession to play track one.
Do not just press play.
Do not just use remote to press play or to use its numerical keys to select track one.
Follow Ups:
Just out of interest, how did you come to "discover" this and what do you think is actually happening?
Let's look at step 4 (the first one after 3 since you have 2 labelled as "4"):
You specify a Japanese CD.... What is the importance of the country of origin?
Secondly, what is the significance of a BS-CD in yielding better results?
Thirdly, you haven't defined the time for which you leave the player "off" during the power-cycle - If you believe that turning it off is an important step, then surely the time the unit is "off" must be important too? Or do you think the "memory" you refer to is instantly lost when power is removed?
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
Do you honestly believe that the button presses you make in order to play a disc actually have an effect upon the quality of playback?
If you honestly believe this to be so, can you provide a hypothesis as to why your playback scheme results in audibly better playback quality? I'll tell you right up front, sounds like a bunch of hogwash to me...
-RW-
It could be hogwash, but it could also relate to how the firmware works. Without detailed design information (reverse engineering) of the firmware, I would not dismiss the possibility. Unlikely, but not impossible.
For doing comparison testing my normal practice is to assume the worst and eliminate these possibilities by using consistent button pushes. IMO, as unlikely as it may be, failure to control every variable that can be practically controlled is failure to practice careful experimentation. So, for example, when people who dismiss results of others as "hogwash" I tend to be suspicious of these people's own experimental results. My working assumption is that people who have a closed mind are not going to be good experimenters.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
Jerome is quite serious about this. He and I both have the ELP laser turntable and it was on discussing that device that he espoused his theorem. I have pressed him for an explanation on his theory, but he hasn't been forthcoming.
In short, he believes that "all servo mechanisms have a memory". What he means by this is that the disc you play influences the subsequent disc output unless you reset the device.
In the link, I ask him for clarification on what he means exactly since he appears to be using Control Systems terms in a slightly different sense to what I am familiar with.
It is true that certain Sony SACD players can be recalibrated for laser power (I can't remember the reference) and this is used presumably to compensate for laser ageing. However, from what I understand, he is referring to the output data being modified by the previous disc data like an overlay mask.
The magnitude of the output signal will depend on the laser power and the reflection coefficient from the disc surface, but this has nothing to do with the recovered data and only affects the reliability of data recovery with respect to the error correction algorithm. The wavelength of a laser is highly dependent on temperature and if any difference is observed using his method then it would be in resetting the temperature compensation or power output control. However, this can only affect the reliability of the data recovery. Therefore any differences must be due to data related errors and induced jitter.
When applied to the ELP, it is absolute nonsense!
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
I recall some nutter claiming that playing a Telearc, or other digitally mastered LP, on a turntable would destroy the turntable. This was hogwash and I demonstrated such by doing some measurements before/after.
Ironically, within a few months, the sapphire bearing on my SOTA turntable had failed. "Those whom the gods wish to destroy they first make mad."
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
Thanks so much, now this is helpful. I always thought even when the 777s' DAC is outdated, it would still make a good transport, and this procedure makes a lot of sense. Do you have any experience with DACs and the 777es?
If you are going to use an external dac, it is useful to know that the sequence which component, the transport or the dac, to be powered up first, as it is a very very important influence on the subsequent size of the soundstage projection.
After both components are refreshed (power shutdown), the transport must be powered up first.
Load the disc and let it read TOC and settle.
Then power up the dac.
This way the dac "see" the incoming stream only once.
This will have a very big bearing on subsequent sound timbre and soundstage projection.
Then use the skip forward key and the play key in quick sequence to select track one to commence play.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: