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Thread: Reasonably priced dual-master clock (10Mhz) Rb and OCXO....

  1. #71
    VIP/Donor [VIP/Donor] microstrip's Avatar
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    Quote Originally Posted by Elberoth View Post
    For anyone who wants to connect the Cybershaft (or any other clock with 50Ohm clock output) to the dCS clocks (or other clocks/DACs using 75Ohm input) I have found a suitable, lab grade 50Ohm to 75Ohm BNC adapters:

    Pasternack Enterprises PE7007, $25 a piece

    http://www.ebay.com/itm/111978242316...%3AMEBIDX%3AIT
    Unfortunately the seller charges $45 to ship outside US ...
    Under construction around a pair of Wilson XLF's, an Audio Research Anniversary preamplifier, TA OPUS MM2 and a DCS Vivaldi 2.0 stack ...

  2. #72
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    Thanks Stereophonic, however the images are different, I guess it is new model you've posted, isn't it? I found the website: www.v-acoustics.com and did not find new pictures!

  3. #73
    does it make sense to use such an external ref clock before an Yggdrasil? (in my case associated to my Mutec MC3+USB).
    My question is whether the limiting factor won't be the internal clock of the Yggdrasil and as such, anything done before the Yggy would be negated by a potentially inferior clock within the DAC itself?

  4. #74
    Member Sponsor Addicted to Best! Elberoth's Avatar
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    Quote Originally Posted by microstrip View Post
    Unfortunately the seller charges $45 to ship outside US ...
    He charges less, just contact him.
    Adam

    Speakers: Magico M3
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  5. #75
    Addicted to Best! SCAudiophile's Avatar
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    Quote Originally Posted by microstrip View Post
    Unfortunately the seller charges $45 to ship outside US ...
    Have you tried just bringing up www.pasternack.com and ordering direct from them?

  6. #76
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    Quote Originally Posted by Stereophonic View Post
    Hi SC.
    I'm waiting for the new clock that you said....
    I'm testing a prototype only as I said; there is no guarantee that it will be better than a great OP13 or OP14 implementation.

    Surprisingly enough, in a recent test an OP28 (yes such things do exist but they are like unobtanium, 1 in thousands upon thousands tests out this good) based 10 mHz clock actually did NOT help the audio signal quality, imaging, musicality, etc...at all; quite the opposite. Even though the phase noise was almost immeasurable, signal strength was very low, locking then of course became much more difficult and most importantly, the resultant musical playback was not as good at all. I cannot give more details unfortunately but suffice it to say that I've heard nothing to date that beats a great quality OP13 or OP14 implementation. That may change but we'll see.

  7. #77
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    A fascinating read on what type of setup and care it takes to produce quality master clocking products and also what it takes to maintain the calibration and testing to do so;


    http://www.cybershaft.jp/clockcal.html


    Also,...I've concluded many months of testing with 2 additional OCXO clocks from Cybershaft whose OCXO circuit was even more refined than the OP13+ type 2 unit in my RBOCXO-01 and also with a loaned high-quality Rubidium unit (used to have the Esoteric G-0s but it is no longer in my system so I had to borrow its successor from a friend). Please note my earlier testing with an OP28 level device did not yield good a result set and musical playback result as I had hoped; the 2 latest units tested for several months were above OP13 but not as high as OP28....

    At each step of the way, the idea that lower phase noise (and thus lower harmonic distortion and better Allan Variance (measure of short-term stability) were fundamental to the best musical playback, imaging, sound-staging and realistic playback has been proven as a fact.


    In side by side comparisons of OCXO and Rb-based clocking, I found that I preferred, by a large margin, a high-quality OCXO clock circuit's impact on the musical playback experience every time.

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