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[CAS] World Clock & 10M Clock

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發表於 2019-2-21 20:24:24 | 顯示全部樓層
本帖最後由 vhs 於 2019-2-21 22:25 編輯
greenleo 發表於 2019-2-21 20:14
This not true.  The word clock is used to sync different devices, usually used in sound recording/ ...


https://www.dcsltd.co.uk/products/vivaldi-clock/

dCS Vivaldi Master Clock simultaneously sends word clock signal (i.e., 44.1 HZ and 48 kHz) to both dCS Vivaldi DAC and dCS Network Bridge.

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發表於 2019-2-21 20:30:30 | 顯示全部樓層
sclegend 發表於 2019-2-21 20:18
vhs Ching: Just curious, if I remember correctly, DCS DAC has 3 clock inputs, do you need to connect ...

No need to connect 3 clock inputs. Only connect two inputs (i.e., CH1 and CH2). One is 44.1 kHz and the other is 48 kHz.

Vivaldi DAC is equipped with one word clock output. If you don't have Vivaldi Master Clock, you can have dCS Vivaldi DAC's internal clock output word clock signal to, for example, dCS Network Bridge. SQ dramatically improves.....
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發表於 2019-2-21 20:35:26 | 顯示全部樓層
greenleo 發表於 2019-2-21 20:14
This not true.  The word clock is used to sync different devices, usually used in sound recording/ ...

http://www.highfidelity.pl/@kts-822&lang=en


Vivaldi Master Clock can be slaved to an external reference (i.e., Cybershaft OP20).
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發表於 2019-2-21 20:36:50 | 顯示全部樓層
LanLan 發表於 2019-2-21 20:08
this would be an interesting comparison  some Ching here shared that Grimm clock seem doe ...

Lan Lan Ching, long time no see la
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發表於 2019-2-21 20:37:43 | 顯示全部樓層
greenleo 發表於 2019-2-21 20:14
This not true.  The word clock is used to sync different devices, usually used in sound recording/ ...

Vivaldi Master Clock only outputs word clock signal........

The name of "Master" Clock has misled you......
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發表於 2019-2-21 20:43:45 | 顯示全部樓層
vhs 發表於 2019-2-21 20:30
No need to connect 3 clock inputs. Only connect two inputs (i.e., CH1 and CH2). One is 44.1 kHz an ...

Thanks for sharing, does that mean if I only have 44.1 kHz source and no other source, I could have connected to Ch  1 only?
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發表於 2019-2-21 20:44:32 | 顯示全部樓層
sclegend 發表於 2019-2-21 20:43
Thanks for sharing, does that mean if I only have 44.1 kHz source and no other source, I could hav ...

Yes..........
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發表於 2019-2-21 20:47:50 | 顯示全部樓層
本帖最後由 vhs 於 2019-2-21 20:59 編輯
sclegend 發表於 2019-2-21 20:43
Thanks for sharing, does that mean if I only have 44.1 kHz source and no other source, I could hav ...


If using Aurender W20, a bit different .......see the attached pic...
dCS Aurender w20.jpeg
dCS Upsampler W20.jpeg
dCS DAC W20.jpeg
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發表於 2019-2-21 21:02:07 | 顯示全部樓層
vhs 發表於 2019-2-21 20:47
If using Aurender W20, a bit different .......see the attached pic...

vhs Ching: Thanks for the detail explanation.
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發表於 2019-2-21 21:02:35 | 顯示全部樓層
sclegend 發表於 2019-2-21 21:02
vhs Ching: Thanks for the detail explanation.

welcome.....
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發表於 2019-2-21 21:07:50 | 顯示全部樓層
vhs 發表於 2018-12-21 14:09
1. dCS Vivaldi DAC + dCS Network Bridge
2. dCS Vivaldi DAC outputs word clock signals to dCS Netwo ...

This was my personal experience.....
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發表於 2019-2-21 21:29:33 | 顯示全部樓層
vhs 發表於 2019-2-21 20:35
http://www.highfidelity.pl/@kts-822&lang=en

Yes, the OP20 is the reference clock.  It doesn't drive anything directly.  But the clocks under it drivers other things.
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發表於 2019-2-21 21:30:25 | 顯示全部樓層
greenleo 發表於 2019-2-21 21:29
Yes, the OP20 is the reference clock.  It doesn't drive anything directly.  But the clocks under i ...

Yes of course.....
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發表於 2019-2-21 21:43:57 | 顯示全部樓層
sclegend 發表於 2019-2-21 20:36
Lan Lan Ching, long time no see la

haha, thanks for remembering me Sclegend Ching , been very busy these days, not much time to enjoy music
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發表於 2019-2-21 22:29:07 | 顯示全部樓層
本帖最後由 vhs 於 2019-2-21 22:31 編輯

https://www.grimmaudio.com/pro-products/master-clocks/cc1/


Quote:

"CC1配備了一個自家研發頂級PLL鎖相環,在10Hz時提供驚人的90dB抖動抑制,之後進一步提高至60dB / dec。 CC1除了同時提供44.1kHz,48kHz和 1 / 2 / 4 倍頻的基本速率,更用作AES / EBU時鐘恢復器,為DA轉換器的數字信號清除抖動"

End Quote

fot_cc1.jpg
fot_cc1_back_box.jpg
press_grimm_cc1_pcb_clock.jpg
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發表於 2019-2-21 22:30:29 | 顯示全部樓層
vhs 發表於 2019-2-21 18:21
Grimm is better than Vivaldi Clock ?

I have owned a Vivaldi Clock and Cybershaft Op-20 for sometime.

With Vivaldi Clock alone, Grimm wins in my system.  With Grimm and good clock cables, the sound is very detailed yet natural.  The improvement brought about by Vivaldi Clock alone is more subtle.

With Vivaldi + OP-20, the improvement is much more noticeable.  Compared to Grimm, the Combo gives even more details.  The sound is so detailed, and I preferred to turn on the dither mode in the Vivaldi Clock to make the sound less imposing.  Yet, Grimm still has its glamour that it gives (to me at least) more natural and, perhaps euphonic sound.  Price wise, Grimm is a real bargain.  It also saves space (my cabinet is full, and can house either one clock n UPS, or the two-clock combo).  In the end, Grimm remained in my system.  It was a tough decision though.

The drawback of Grimm is that it can only output 44.1 or 48 at one time, not in parallel like Vivaldi Clock.  So I have to switch Grimm manually for tracks with different frequency bases (though most tracks are 44.1, and DSD is 44.1 based too).  In future, if I ever switch to NAS, I will add a second clock (such as Grimm CC2).  That gives two truly independent clocks for the dCS system and will remove the switching hassle.
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發表於 2019-2-21 22:33:54 | 顯示全部樓層
本帖最後由 vhs 於 2019-2-21 22:35 編輯
Siegfried 發表於 2019-2-21 22:30
I have owned a Vivaldi Clock and Cybershaft Op-20 for sometime.

With Vivaldi Clock alone, Grimm w ...


Thanks a lot for your sharing.....

".....So I have to switch Grimm manually for tracks with different frequency bases...... ".....yes this is drawback.....

Grimm CC1 is much cheaper than Vivaldi Master Clock..........
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發表於 2019-2-21 22:36:08 | 顯示全部樓層
vhs 發表於 2019-2-21 20:47
If using Aurender W20, a bit different .......see the attached pic...

I did not follow the recommended connections for UPS as per the Aurender website.

The one "to DAC direct" does not upsample signals from W20 at all.  Why the hell do I need the UPS then?

If you check out the Aurender website, one recommended connection is to use USB, though it still asks you to connect the clock.  As USB runs in async mode in UPS, the clock becomes useless!

I connect W20 to UPS with single AES and clock.  It sacrifices the dual-AES capability of the W20, though for red-book 44.1 signals only single AES is used.
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發表於 2019-2-21 22:37:06 | 顯示全部樓層
vhs 發表於 2019-2-21 20:24
https://www.dcsltd.co.uk/products/vivaldi-clock/

dCS Vivaldi Master Clock simultaneously sends wo ...

Yes, and Grimm CC1 is a master clock behaving like Vivaldi Master Clock, though Grimm can only output 44.1 OR 48 at any one time.
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發表於 2019-2-21 22:37:48 | 顯示全部樓層
本帖最後由 vhs 於 2019-2-21 22:40 編輯
Siegfried 發表於 2019-2-21 22:36
I did not follow the recommended connections for UPS as per the Aurender website.

The one "to DA ...





"I connect W20 to UPS with single AES and clock".....good move.....




"The one "to DAC direct" does not upsample signals from W20 at all.  ".......Yes...
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