Finally, one is heading my way...
And since a search did not get much results; please give me some upgrade suggestions!
For "integrated" use, op-amps & blocking-caps are obvious.
But what about clock(s)? Witch is most important?
For 1) audio out use? 2) digital out use?
Would maybe a Tent clock with "feedback" be usable here?
(guess not, frequencies does not add up)?
Arne K
P.S.: My Teac VRDS-10 is up for trade / sale...incl.new laser.
(and another new as spare!(KSS-151A). -looking for new KSS-272A )
And since a search did not get much results; please give me some upgrade suggestions!
For "integrated" use, op-amps & blocking-caps are obvious.
But what about clock(s)? Witch is most important?
For 1) audio out use? 2) digital out use?
Would maybe a Tent clock with "feedback" be usable here?
(guess not, frequencies does not add up)?
Arne K
P.S.: My Teac VRDS-10 is up for trade / sale...incl.new laser.
(and another new as spare!(KSS-151A). -looking for new KSS-272A )
Work have started
-but I need some help...
On the audio-board, after the DAC, signal goes to op-amp IC402/502.
On schematics it says "DE-EMPHASIS" on these, and there is no switch....so is the signal filtered for de-emphasis all the time?
Should I remove/modify/bypass the filter?
Arne K
-but I need some help...
On the audio-board, after the DAC, signal goes to op-amp IC402/502.
On schematics it says "DE-EMPHASIS" on these, and there is no switch....so is the signal filtered for de-emphasis all the time?
Should I remove/modify/bypass the filter?
Arne K
Thanks ELSO !
Another thing I also noticed...the difference in signal-path; the filtering & buffering of the RCA signal vs the less treated balanced signal...
Arne K
Another thing I also noticed...the difference in signal-path; the filtering & buffering of the RCA signal vs the less treated balanced signal...
Arne K
Hi Arne,
That whiskey was not a good idea........
I have a look at the schematic. Deemphasis is simply wrong, should be IV-converter for IC402 & 502.
Balanced out takes a separate route after these IC's.
If you are using the player only as a transport the 16.9344 MHz clock is only important. Digital out will even work with the 45.1584MHz clock disabled if you install a 16.9344 clock.
The 45.1584MHz clock is needed for the Sigma-Delta DAC. When using the player integrated you run across the two clock problem as these two clocks need to be synchronised.
😎
That whiskey was not a good idea........
I have a look at the schematic. Deemphasis is simply wrong, should be IV-converter for IC402 & 502.
Balanced out takes a separate route after these IC's.
If you are using the player only as a transport the 16.9344 MHz clock is only important. Digital out will even work with the 45.1584MHz clock disabled if you install a 16.9344 clock.
The 45.1584MHz clock is needed for the Sigma-Delta DAC. When using the player integrated you run across the two clock problem as these two clocks need to be synchronised.
😎
Re: Work have started
Hi Cobra
Sometimes the switching is done by a Fet or transistor and not by a switch...
Cobra2 said:
On schematics it says "DE-EMPHASIS" on these, and there is no switch....so is the signal filtered for de-emphasis all the time?
Hi Cobra
Sometimes the switching is done by a Fet or transistor and not by a switch...
Switching
This time it is a error in the schematics...!
Another error; the balanced output is wrong (+/-)(swapped).
Try also dis-connecting the digital out wiring...it makes a change in sound !???!
I also noticed that the internals are quite warm..a few vent-holes would help!
Arne K
This time it is a error in the schematics...!
Another error; the balanced output is wrong (+/-)(swapped).
Try also dis-connecting the digital out wiring...it makes a change in sound !???!
I also noticed that the internals are quite warm..a few vent-holes would help!
Arne K
Re: Re: deemphasis
😎
Deemphasis is done in the digital filter in this Sony model.Tube_Dude said:
Hi Cobra
Sometimes the switching is done by a Fet or transistor and not by a switch...
😎
Try also dis-connecting the digital out wiring...it makes a change in sound !???!
I added a coax out on my Sony CDP-295, if analog is plugged in it at the same time as a coax receiver, the SPDIF signal starts sounding like crap, but if I use my DIY coax 2 mini-optical plug, the signal is OK.
Digital...
DragonMaster,
I ment the internal wire, (it's separate, to a "digital-pcb" in my player).
But it will probably always be best leaving out the wiring you do not use...?
Have just "updatet" a X202ES, new op-amps, a few caps, some damping & weight. It has one of the same Dac-chips as the 779, and does sound allright now.
Arne K
DragonMaster,
I ment the internal wire, (it's separate, to a "digital-pcb" in my player).
But it will probably always be best leaving out the wiring you do not use...?
Have just "updatet" a X202ES, new op-amps, a few caps, some damping & weight. It has one of the same Dac-chips as the 779, and does sound allright now.
Arne K
Well, I use both : Analog is plugged in the amp, and coax out to the mini-optical plug for the midi-disc.
Elso Kwak said:The 45.1584MHz clock is needed for the Sigma-Delta DAC. When using the player integrated you run across the two clock problem as these two clocks need to be synchronised.
😎
Whenever this 2 clock thing crops up it is always presented as a huge problem. Can't see what all the fuss is about. There is at least one off-the-shelf solution and generating 1024Fs and 384Fs from a single source is not difficult.
Thread Overview and Gallery arround KSS Series from Sony
in this case this thread could be of interest (include a little gallery and some schematic samples):
http://www.diyaudio.com/forums/digi...ailable-optical-pickups-sonys-kss-series.html
in this case this thread could be of interest (include a little gallery and some schematic samples):
http://www.diyaudio.com/forums/digi...ailable-optical-pickups-sonys-kss-series.html
45MHZ AND 16 MHZ CLOCKS IN CDP-X779ES?
I have a problem installing the 45Mhz clock in the SONY CDP-X779ES. I have a Burson Super clock for 45Mhz but it just won't work then I read your post qouted above could you please elaborate on what you meant by both clocks the 16Mhz and 45Mhz need to synchronized.? Is that the problem why it will not work with one super clock installed at the sigma delta DACs. Would a superclock for 16mhz from Burson cure this.
When I put the old crystal back with the two caps it works fine.
On the schematics I just do not see how the two clock are synchronized.
Please send some advice
Greg
HiHi Arne,
That whiskey was not a good idea........
I have a look at the schematic. Deemphasis is simply wrong, should be IV-converter for IC402 & 502.
Balanced out takes a separate route after these IC's.
If you are using the player only as a transport the 16.9344 MHz clock is only important. Digital out will even work with the 45.1584MHz clock disabled if you install a 16.9344 clock.
The 45.1584MHz clock is needed for the Sigma-Delta DAC. When using the player integrated you run across the two clock problem as these two clocks need to be synchronised.
😎
I have a problem installing the 45Mhz clock in the SONY CDP-X779ES. I have a Burson Super clock for 45Mhz but it just won't work then I read your post qouted above could you please elaborate on what you meant by both clocks the 16Mhz and 45Mhz need to synchronized.? Is that the problem why it will not work with one super clock installed at the sigma delta DACs. Would a superclock for 16mhz from Burson cure this.
When I put the old crystal back with the two caps it works fine.
On the schematics I just do not see how the two clock are synchronized.
Please send some advice
Greg
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