Rubidium Clock

Zephyr,

The newer X version over the non-X or your D-02 uses the same clock input connecting, however, it is menu selectable to accept 10M input as well as a masterclock input of 22M (the new D-02x has this function.

The Rakon OCXO used in the cybershaft has impressive specs (possibly delivering better short term phase noise) as opposed to any Rubidium module. Not sure if sonics, beats say the G-01.

Maybe Hasegawa-san has tested or compared.

The benefit is the capability of running the master 22M from the G-01 directly to the newer Esoteric players/Dacs. Essentially bypassing all clock circuits of the player/Dac.

I believe that a separate clock, whether a 10M or G-01 unit has over the internal clock of the Esoterics is much more attention and contribution is made by the beefier power supply lacking in the players/dac.

Hi Zephyr,

Thanks for your info on the Cybershaft, i have read the specifications, most impressive, seems 2nd only to the 6X more costly non commercial BVA OCXO which is an end of life product.

It looks to be very impressive where the Rakon's OCXO phase noise surpasses any commercial audio clock!

As to your P-02 / D-02 units, a Masterclock option will likely be  more superior, it believe it is the output feeding of either the P-02 to D-02 or vice versa as your units can act as a Masterclock to feed other units (as such, you will not need to feed 2 separate clock signals to both units).

Are you finding that you are liking the Rubidium output over the OCXO output from the Cybershaft unit?

Hey Zephyr,

I just had to...... Thanks Zephyr for contributing Cybershaft's excellent OCXO at affordable prices!

Just received from Kenji an option 16, -116db/1 Hz OCXO hand selected/tested from many OCXO's.

The packaging was 1st class all the way, just beautifully well packaged and delivery was just too fast, i hadnt even expected it for another 2-3days. 

I have to run it in, nut off the bat, coming from a Quartzlock rubidium 110db/1 Hz into a G-02, what i am experiencing  exactly echos your comments from switch from rubidium to OCXO.

" I had precision in many ways but not the beauty and naturalness I am experiencing with the lower phase-noise OCXO-based presentation."

The Rubidium has maybe better sparkle or "brightness", not in a really bad way and a bit more pyrotechnics in the bass... I would term it a hardness and some glare which i did not really find distracting with careful tweaks and room adjustments. Rubidium thus lends to a brighter, showy or flashy presentation.

Cybershaft's OCXO is just so much more grounded in the mid regions  and has zero brightness that i can tell so far from any genre's of music now, even "poorer" commercial recordings.

Hi Custodian, i appreciate your comment now of low phase noise from your BVA 8607..."Zero digital glare" from discussion from another forum.

I am not certain is this an combined artifact of low phase noise and also character OCXO as opposed to a rubidium unit.

I guess i have fueled my quest of experiment with clocks. Thanks to all, a most excellent resource in this discussion.

In professional studios /  industrial applications of 10M clocking, one may very well see cabling of lengths of 10 meter, 20 meters connection the various equipment.

In his situation, using a 75ohm cable will cause a decrease in voltage reaching the equipment in question, potentially causing locking/syncing problems or possibly not locking at all.

There would not have these issues typically over shorter lengths of 1 meter even if there IS a voltage drop, but to a lesser degree and still capable of locking.

Now, say for the Aurrender W20, there is 1 bnc clock connector, 75 ohms presumably. This would be correct for 44.1, 48khz or multiples, BUT not for a pure 10m sine input. 

10M sine signal, you would want a 50 ohm cable

10M TTL signal, you would want a 75 Ohm cable.

More clarification is required from Aurender, even so the bnc on the unit may have only been considered for TTL Levels.

Sure, the unit will still most likely lock with a 50 ohm cable.