Is asynch reclock with a can-type oscillator ok?

[HeadSh0T]

I just finished building my CS8414 / TDA1541A non-os dac with ECC99 tube output-stage.. It sounds excellent but I would like to implement Elso's asynchronous reclocking because of the cs8414's relatively high jitter (200psRMS!)... but instead of building the clock section from Elso's schematic, can I just hook up the flip-flops to a clock module (oscillator)?

I believe Lesha did something like this here:

http://users.podolsk.ru/boga/Images/DAC_DigR.gif

The space inside my enclosure is tight so if I can just use a module, that would be great.


I will post pics of my dac as soon as get my digital camera back..

[jean-paul]

Make that a low jitter module ( not a type for computer use ) and you'll be fine. Please check specs before you buy or buy a good one straight away like Guido Tent's XO module. 3 ps jitter will do !

[tonitze]

I successfully implement the assyn. reclocking with normal 50mhz metal can oscillator with fairly good result. Haven't try Guido Xo or Elso'S 100mhz assyn. clock though. Shoud give better result i believe.

Toni

[jean-paul]

The purpose of reclocking is to lower the jitter. Standard modules maybe have lower jitter than SPDIF/CS8412 alltogether but a real low jitter module is the optimum of course.

[HeadSh0T]

Thanks for the replies! but now i have another question:

Does an oscillator module produce lower jitter or does a crystal in a clock like Elso's produce lower jitter? or are they so close that the difference is inaudible??

[Guido Tent]

Originally posted by HeadSh0T
Thanks for the replies! but now i have another question:

Does an oscillator module produce lower jitter or does a crystal in a clock like Elso's produce lower jitter? or are they so close that the difference is inaudible??

Hi

There is no unique answer as it lies in the design of both units and their power supplies.

I did test (measure and listen to) over 30 modules, 28 of them are lousy. They all sound different anyhow.

regards

[fmak]

There is no unique answer as it lies in the design of both units and their power supplies.

I did test (measure and listen to) over 30 modules, 28 of them are lousy. They all sound different anyhow.

-----------------------------------------------

Audiocom in UK claims they have a superior clock by not using an XO but a high frequency sine wave generator and then having the tops loped off - and old sine/sq wave generator technique.

The price is rather, no too high.

Any comments, anyone?

[Jocko Homo]

First, you start with a very high-Q circuit......and a very quiet power supply.

A friend who works for a crystal house is not at all impressed by the above mentioned clock.

Jocko

[Elso Kwak]

Originally posted by HeadSh0T
I just finished building my CS8414 / TDA1541A non-os dac with ECC99 tube output-stage.. It sounds excellent but I would like to implement Elso's asynchronous reclocking because of the cs8414's relatively high jitter (200psRMS!)... but instead of building the clock section from Elso's schematic, can I just hook up the flip-flops to a clock module (oscillator)?

I believe Lesha did something like this here:

http://users.podolsk.ru/boga/Images/DAC_DigR.gif

The space inside my enclosure is tight so if I can just use a module, that would be great.


I will post pics of my dac as soon as get my digital camera back..

http://www.diyaudio.com/forums/showt...163#post147163