DIY Project High Performance Audio PC with high quality wiring

[wittao]

23 hours ago, StreamFidelity said:

...... Sellarz clocks (-172dBc ultra low phase noise). .....

 

Just please read it again with opened mind... Is it possible?????

Ad.1. That same parameter isn't possible in the Frequency range 10 MHz - 54 MHz

     -172dBc/0.098PS RMS Jitter @100HZ ~ 1MHz

Ad.2. -172dBc is ok but maybe at 1 MHz... and not 100Hz. That range is an Ultra-Ultra-Ultra Clock's range with 40.000 USD price.

Ad.3. i believe that the SQ is better after the tuning, it isn't a question. 

 

     For example  10 MHz clock with -147dB@10Hz is a very very good OCXO and the price is about 1500 USD. (This clock's phase noise is -168dB@10kHz)

 

 : 

 

"1. Frequency
- 10.000000 MHz
- 11.289600 MHz
- 12.000000 MHz
- 12.288000 MHz

- 12.500000 MHz
- 14.318000 MHz
- 16.934400 MHz
- 18.432000 MHz
- 20.000000 MHz
- 22.579200 MHz
- 24.576000 MHz
- 25.000000 MHz
- 27.000000 MHz
- 30.000000 MHz

- 40.000000 MHz
- 45.158400 MHz
- 48.000000 MHz
- 49.152000 MHz
- 54.000000 MHz

2. Jitter Noise : -172dBc/0.098PS RMS Jitter @100HZ ~ 1MHz

......

Please select the frequency when ordering.

For example : "45.158400 MHz" 

" 

[wittao]

It was only just my first impression read your datas

 

In SQ as we tried it and tested it the most important thing is the nearest phase noise (1Hz, 10Hz and 100Hz) and of course the RMS Jitter in the femto second range (or the ultra femto range under 100 fs).

 

But again: if the sound you like that is the most important thing!

 

[wittao]

1 hour ago, OAudio said:

I spotted this too, but was charitable and assumed a typo, 100HZ should have been 100KHZ perhaps ?

But even then is "strong" performance getting to -172dBc at 100kHz.

 

Regardless of the clock details I think this is worth a look.

Yes, maybe 100kHz is true.

 

As i sad earlier a clock designer have a choice with their clock PCB: nearest or distant noise is the most important development point for the application (or frequency accuracy etc.).

 

That is a measurement of our 49.152 TCXO clock with FSWP:

 

 

 

[wittao]

1 minute ago, OAudio said:

 

That's very nice close in performance for a ~50Mhz carrier.

Is this with a sinusoidal or HCMOS output ?   

Thanks :)

The clock boards what we make have 2 SIN ans 3 HCMOS outputs/oscillator. And that measurement isn’t only just the oscillator’s data, it produce these parameters when it works in the PCB clock board.